The right path plunged like a dark throat into the underground forest. The sickly greenish light from the phosphorescent moss seemed actively absorbed by the thick shadows clinging to the gnarled, dripping tree trunks. Each step on the carpet of dead leaves was a muffled sound, almost obscene in the oppressive silence, a constant reminder of their intrusion into this unnatural pce. The air was heavy, stagnant, saturated with that persistent smell of damp earth, decaying vegetation, and the acrid reptilian musk reminiscent of the boss room. Occasionally, a whiff of a different scent, almost floral but cloying, drifted towards them, adding a discordant note to the ambient stench.

  Renji walked in the middle of the group, a position he had chosen instinctively. Neither too exposed at the front, nor vulnerable at the rear. His senses were on high alert, his eyes relentlessly scanning the darkness between the trees, his ears strained for the slightest suspicious rustle. Tension was a vibrating cord stretched through the group, palpable in the hunched shoulders, the furtive gnces cast over shoulders, the hands clenched on non-existent or improvised weapons. The image of Takeshi, strangled by that impossible neck, kept haunting him. Death wasn't an abstract threat here. It was a tangible presence, swift, and apparently indifferent. Every shadow could conceal a simir end.

  Kenta led the way, his crude stick held firmly before him. The youthful arrogance he had dispyed earlier was gone, repced by a fierce, almost animalistic focus. His knuckles were white on the rough wood. Behind him, the imposing Goro and the pragmatic Junichi formed a close guard around Misaki and Aiko. Misaki, despite her own obvious fear, whispered words of encouragement to Aiko, who limped slightly, her sprained wrist clearly painful. Daichi was a nervous wreck, stumbling almost with every step, his wide eyes fixed on Goro's massive back as if it were his only anchor in this nightmare.

  On the fnks, Haru moved with a silent grace that contrasted with the rest of the group. He seemed to blend into the shadows, his movements fluid and economical, his sharp eyes missing no detail. And then there was Yuki. Walking alone, slightly apart, she remained an enigma. Her imperturbable calm in the face of the surrounding horror was deeply unsettling. Was she simply observing, or did she know something they didn't? Renji couldn't help but watch her out of the corner of his eye, an instinctive mistrust battling the need for group cohesion.

  This pce is psychological torture.Renji realized, wiping a drop of cold sweat from his forehead despite the cool, damp air.The constant darkness, the unknown sounds, the waiting... It's designed to break the spirit. We have to stay focused.He gnced at the others. They were holding on, for now, but for how long? Fear gnawed at their resolve like acid.

  The path wound onward, descending slightly. The faint pping of water heard earlier became more distinct, suggesting a water source somewhere ahead or below. Was that a good thing? Water meant life, but in this pce, it could also mean unknown dangers.

  Suddenly, a different sound broke the tense monotony. A faint rustling high above them, in the unfathomable darkness where the branches disappeared. Then another, closer. It wasn't the sound of a falling leaf or a cracking branch. It was a swift, deliberate movement.

  The group froze as one, heads raised, scanning the darkness of the cavern ceiling. Silence fell again, even heavier than before. Only the sound of their pounding hearts seemed to echo in their ears.

  A chuckle. Strange, ethereal, almost like the distorted ughter of a child, but tinged with a cold malice that made the hairs on the back of Renji's neck stand on end. The sound seemed to come from everywhere and nowhere at once.

  “What was that?”Daichi whispered, his voice strangled with terror.

  Before anyone could answer, a dark shape detached itself from the upper darkness, falling with silent grace. It didn't crash to the ground. Instead, it nded with supernatural agility on a thick, glistening branch about ten meters ahead of them on the path, swaying slightly.

  The creature wasn't entirely solid. Its simian silhouette seemed woven from shifting shadows and the ambient greenish phosphorescent light, giving it a spectral, semi-transparent appearance. Its outlines flickered, like an image seen through intense heat. Two pinpoints of cold, malicious intelligence glowed where its eyes should be. A Spectral Monkey. It crouched on the branch, watching them intently, its ghostly form almost blending into the twisted scenery of the underground forest.

  A collective shiver ran through the group. This wasn't the raw physical threat of the Rokurokubi. It was something else, elusive, ethereal... and potentially just as deadly.

  “A Saru... a monkey spirit?”Aiko gasped, her academic knowledge cshing with the terrifying manifestation before her.“They're supposed to be tricksters, sometimes dangerous, but... spectral?”

  The Spectral Monkey tilted its head, as if understanding, then let out another grating chuckle. Without warning, it leaped from its branch. Its movement was unnatural. It didn't fall, it almost glided, spiraling down before nding on the spongy ground without a sound. Then, it straightened up and rushed towards them, its flickering form moving with disconcerting speed, a blur of shadow and green light.

  “Watch out! It’s coming!”Kenta yelled, raising his stick.

  Goro pnted himself firmly in front, a wall of muscle ready to intercept the charge. But the monkey was unpredictable. Instead of hitting Goro head-on, it veered sharply, its spectral form seeming to pass through the thick edge of a tree trunk as if solid matter held no substance for it. It reappeared instantly on the other side, bypassing Goro's guard and now aiming for the group's fnk, where Haru stood, slightly isoted.

  “It... it went through the tree!”Kenta stammered, disbelief mixing with fear in his voice.“How do we fight that?!”

  Panic threatened to overwhelm them again. The creature's apparent intangibility rendered their meager defenses and improvised weapons potentially useless.

  The monkey lunged at Haru. Its cws, made of the same spectral substance as the rest of its body, sshed at the young man's arm. They didn't tear the fabric of his jacket, but passed right through. Haru cried out sharply, not from intense physical pain, but from surprise and a sharp, unpleasant sensation. He stumbled back, clutching his arm. Where the cws had passed, no wound was visible, but the skin looked slightly paler, and Haru grimaced as if he had touched dry ice.

  No direct physical damage...Renji's mind raced, trying to decipher the nature of the attack.It's not completely harmless. Its attacks have a real effect, even if it's not a cut.

  The Spectral Monkey let out another mocking chuckle and leaped back agilely, narrowly dodging a furious swing from Kenta's stick that cut through the air. The creature moved with disconcerting fluidity, using the environment to its advantage. It leaped onto another tree trunk, ran along it as if gravity had no hold, then jumped to another branch, almost disappearing into the shadows before reappearing elsewhere. It was a frustrating, elusive opponent.

  While Kenta and Goro tried futilely to hit or grab the dancing shadow, Renji decided a direct approach was useless. They needed to test the creature's limits, see if anything other than brute force could affect it. He backed up slightly, his eyes searching for opportunities in the immediate environment. The phosphorescent moss caught his attention. It seemed to be the main light source. What if...

  “Hey! Over here, you ugly monkey!”Renji yelled, trying to divert the creature's attention for a second.

  He rushed to the nearest moss-covered tree trunk and began tearing off rge handfuls, throwing them towards the spectral monkey. His hope was that the concentrated light, however faint, might disrupt its ethereal form. The moss flew through the air, casting erratic greenish fshes. The monkey flinched visibly, leaping back, but the scattered light didn't seem to hurt it or force it to materialize. It chuckled, as if amused by the attempt.

  Missed. The light isn't strong enough or not the right approach.Renji gritted his teeth.What about sound?

  He picked up a heavy stone and struck it violently against a nearby tree trunk, producing a dull, resonant thud. He repeated the action several times, creating a sudden cacophony in the retive silence. The monkey paused again, tilting its head, its bright eyes fixed on Renji, but it showed no sign of distress or disorientation. It seemed more curious than anything else.

  Damn it. Neither improvised light nor noise really works.Despair began to creep in.

  The ensuing fight was a chaotic ballet of frustration and fear. Kenta charged angrily, his stick often hitting empty air or sliding harmlessly through the spectral form. Goro tried to grab it, to immobilize it, but his massive hands simply passed through the ethereal creature, leaving him off-bance and exposed. Junichi, having given up on throwing useless stones, shouted warnings, trying to track the monkey's erratic movements.

  “It’s there! Behind you, Aiko!”“No, it moved! Near Daichi!”

  Daichi was practically catatonic, huddled behind the rgest tree he could find, muttering incoherent prayers. Misaki stayed close to Aiko, helping them stay back, desperately searching for a solution, a weakness. Haru, despite the throbbing pain in his arm, now moved with increased caution, his eyes never leaving the creature. Yuki remained a statue of strange calm, observing every move.

  The monkey seemed to be toying with them. It would appear suddenly, strike with its icy cws, another muffled cry of pain as Junichi was hit in the leg, then disappear before a counterattack could be mounted. Its speed and ability to partially ignore solid terrain made it incredibly difficult to pin down.

  There has to be a logic. A pattern. It can't be intangible all the time, otherwise how could it interact with us, even to hurt us?Renji forced himself to stay calm, to observe beyond the panic. Renji's attempts with the environment had failed, but they had forced him to observe even more closely. He noticed something. Just before the monkey unched its spectral cw attack, its form seemed to flicker differently, become a fraction of a second more... defined. As if it had to concentrate its spectral energy to inflict that chilling injury, and during that brief moment, it was less ethereal.That's it! The moment it attacks! It must become tangible, even if only for a split second!

  The battle dragged on. Frustration turned to desperation. The monkey's chilling attacks drained not only their physical stamina but also their mental fortitude, each touch leaving a lingering, draining cold sensation. Goro had several pale marks on his arms and legs. Kenta was breathing heavily, his initial anger giving way to visible exhaustion. Even Haru seemed slower, the pain in his arm hindering him.

  “We can’t keep this up!”Junichi gasped, grimacing from his injured leg.“It’ll pick us off one by one!”

  “The moment it strikes!”Renji suddenly shouted, his voice cutting through the chaos.“It becomes solid right when it attacks! Aim for it then!”

  Some looked at him in confusion, but Kenta, ever ready for action, seemed to understand. His eyes lit up with renewed determination. Goro grunted, bracing himself.

  The monkey, perhaps surprised by the sudden shout or simply continuing its cruel game, appeared abruptly in front of Kenta, its spectral cws aiming for his chest.

  “NOW!”Kenta roared.

  Instead of dodging, he pivoted, using the momentum of the monkey's attack against it and brought his stick down with all his might at the precise moment the cws were about to connect. Simultaneously, Goro, anticipating the move thanks to Renji's warning, charged and threw a massive punch aimed at the monkey's body at the same critical instant.

  This time, there was no ethereal slipping. Kenta's stick hit something with a dull, cracking thud. Goro's fist smmed into the spectral form with a force that made the monkey shriek. The creature, caught off guard and struck at the exact moment of its vulnerability, was thrown backward, its form flickering violently.

  It was the opening they needed. Before the monkey could regain its intangible form or escape, Kenta and Goro lunged at it again. Haru, seeing the opportunity, darted out from the shadows and stabbed something sharp, perhaps a sharpened stone or a hastily found wood splinter, into the now-tangible creature's fnk.

  The monkey let out a high-pitched shriek, a tearing sound that held none of its earlier mockery. Its spectral form flickered frantically, losing cohesion. The greenish light composing it seemed to intensify then implode inward. With a final spectral whimper that faded into the stagnant air, the creature dissipated completely, leaving behind only a sudden silence and a biting cold that slowly dissipated.

  The silence that followed was heavy, punctuated only by ragged breaths and muffled groans of pain. They looked at each other, faces marked by exhaustion, fear, and a glimmer of incredulous triumph. They had survived. They had defeated their first real opponent.

  Kenta dropped his stick, leaning on his knees to catch his breath. Goro helped Junichi sit against a tree, examining his leg. Misaki rushed over to see if she could do anything, her first aid knowledge suddenly seeming inadequate against these spectral wounds.

  That's when the sensation returned, stronger this time, for those who had participated in the fight. A distinct vibration in the mark on the back of their left hand, followed by clear information imposing itself on their minds:

  XP Gained: +25

  The number seemed paltry compared to the effort and terror endured, but it was tangible proof received mentally by each participant. A personal confirmation of the rules of this twisted system.

  Almost immediately after, another, more intense notification manifested solely in Kenta's mind, who had nded several decisive blows. His mark pulsed with a brighter light, signaling the event to the others, while the details flooded his head:

  Stats Updated:HP: 100 -> 115 (+15)MP: 50 -> 55 (+5)STR: 12 -> 14 (+2)AGI: 8 -> 9 (+1)END: 10 -> 12 (+2)INT: 5 -> 6 (+1)SPR: 5 -> 6 (+1)Level Up! Level 2 Reached!Css Unlocked: WarriorSkill Acquired: Offensive StanceOffensive Stance: Temporarily increases damage dealt at the cost of reduced physical defense.

  Kenta stared at his marked hand with a mixture of awe and apprehension. He felt a new energy, a raw aggression, rising within him, confirmed by the numbers and words imposing themselves on his mind. A skill! He then looked up at the others, who were watching him curiously after the glow from his mark, a whirlwind of emotions crossing his face: the relief of survival, the pain of injuries, and the terrifying but undeniable realization that they were engaged in a deadly game of progression. They could get stronger, yes. But the Abyss had just proven that brute strength wasn't the only thing that mattered, and that its challenges would be far more varied and insidious than they had imagined. The path ahead suddenly seemed infinitely longer and more dangerous.