Does 'Mutation Abyss' Have A Sequel Or Spin-Off Series?

There are a handful of moments in 'Kiss Abyss' that absolutely detonated on social feeds, and I was glued to every redraw drop. The one that blew up the most for me was the rain-soaked first kiss — not just the kiss itself, but the panel composition: a close-up of faces, beads of water catching the light, and that tiny, off-center background silhouette. Artists loved how much emotional weight you could pack into a single frame. Another scene that kept spawning fan art was the Abyss Encounter sequence, where the environment seems to breathe and petals (or ash?) swirl around them. That visual motif became a filter artists layered over domestic scenes, battle redraws, and even cosplays. Finally, the finale’s bittersweet embrace — framed by shards of light and a collapsing chapel — triggered hundreds of alternate endings and “what if” comics. I still save the best reinterpretations in a folder; some are soft, some are dark, but they all chase that exact mix of intimacy and epic scale that the series nails.

The hidden secret in 'Infinite System Inheritor Return from the Abyss' revolves around the protagonist’s true lineage and the cosmic-scale conspiracy he’s unwittingly part of. The Abyss isn’t just a physical place—it’s a sentient dimension that selectively grants power to those it deems worthy, embedding fragments of an ancient god’s consciousness within them. The protagonist’s system isn’t a random gift but a failsafe created by rebels against the celestial order. The deeper he progresses, the more he realizes his 'inheritance' is a rebellion against the gods who sealed the Abyss. His ancestors were traitors to divinity, and his return marks the beginning of a cycle meant to overthrow the cosmic hierarchy. Clues are scattered through cryptic runes and the erratic behavior of his system, which sometimes acts against his survival—hinting at a larger sentience testing him. The final twist? The Abyss itself is the prison of the original system creator, and inheritors are merely vessels for its resurrection.

The protagonist of 'Return from the Abyss' is a hardened survivor named Kael Arcanis, a former scholar turned relentless adventurer after his family was consumed by the titular Abyss. Torn between intellect and brutality, he navigates a world where eldritch horrors bleed into reality, wielding both arcane knowledge and a cursed blade. His journey isn’t just about revenge—it’s a descent into moral ambiguity, as each victory costs him fragments of his humanity. The Abyss reshapes him, granting monstrous powers but demanding grotesque sacrifices. Kael’s complexity lies in his duality: a strategist who calculates every move yet surrenders to primal instincts when pushed. Flashbacks reveal his tragic past, while his present alliances with rogue demons and desperate mercenaries blur the line between hero and villain. What sets Kael apart is his refusal to be a pawn. Unlike typical protagonists, he actively defies prophecies, tearing apart fate’s designs with sheer will. His relationships are volatile—mentors betray him, lovers manipulate him, and even his shadow whispers treason. The narrative forces players to question whether his 'return' signifies triumph or damnation. By the story’s midpoint, Kael isn’t just fighting the Abyss; he’s becoming it.

That final sequence still gives me chills every time I think about it. In 'Reign of the Abyss', everything funnels into a claustrophobic, desperate showdown at the heart of the Abyss itself. The protagonists breach the last barrier after losing several allies, and the true villain is revealed to be someone whose ideals went so far wrong they became indistinguishable from the darkness they opposed. The battle is brutal and intimate — not just sword clashes but moral arguments, memories weaponized, and a ritual that requires a living anchor to the world. In the end the lead makes the hardest choice: they use their bond to the world (and a fragment of their own existence) to reforge the seal. That sealing doesn’t destroy the Abyss so much as change its relationship to life; it’s contained but at a cost. Several characters don’t make it back, and those who do carry scars and gaps in memory. The closing moments are quiet — a simple scene of someone walking away from a ruined shoreline, a locket or a fragment left behind as proof that the price was paid — and I always feel both comforted and hollow afterward.

Late at night I dug through a stack of philosophy books once—coffee gone cold, notes scribbled everywhere—and what struck me was how layered the image of the 'abyss' is in existential thought. If you want a name for the first major thinker who used the idea in a way that feeds into existentialism, I’d point to Søren Kierkegaard. He’s earlier than Nietzsche and frames the abyss in a theological, inward way: the gap between the finite self and the infinite God, the dread and despair of existing as a self. You can see shades of that in 'Fear and Trembling' and more explicitly in 'The Sickness Unto Death', where despair is an existential chasm you have to relate to. That said, Friedrich Nietzsche's formulation — that famous line from 'Beyond Good and Evil' about gazing into the abyss and the abyss gazing back — is the image that later secular existentialists and artists kept quoting. Nietzsche gives the abyss a more psychological and nihilistic spin, which resonated through 20th-century writers. So historically Kierkegaard planted an abyss-shaped seed in a religious register, and Nietzsche reworked the image into a modern, often frightening, confrontation with meaninglessness. Both of them, in different registers, are crucial to how existentialists later used the motif, and I often find myself switching between their takes whenever I reread passages in 'Being and Time' or 'Being and Nothingness'. I like that this gives the abyss both a theological depth and a cold, staring void — two flavors that keep turning up in novels, films, and games I love.

Nietzsche's concept of staring into the abyss and having it stare back is a powerful metaphor for confronting the void or meaninglessness in life, and this idea resonates deeply with many philosophical themes in anime. Take 'Neon Genesis Evangelion,' for instance, where characters like Shinji and Rei grapple with existential dread, loneliness, and the terrifying freedom of self-determination. The abyss here isn’t just external—it’s internal, reflecting their fractured psyches and the absence of easy answers. Another striking example is 'Berserk,' where Guts’ relentless struggle against fate and cosmic horror mirrors Nietzsche’s idea of embracing suffering as part of the human condition. The Eclipse sequence is a literal and metaphorical abyss, forcing characters to face their darkest selves. Even in 'Madoka Magica,' the cyclical nature of despair and sacrifice echoes Nietzsche’s eternal recurrence, questioning whether one can affirm life despite its inherent suffering. These anime don’t just reference Nietzsche—they reimagine his ideas through visceral storytelling, making philosophy accessible and emotionally charged.

As someone who dives deep into both philosophy and fiction, I've stumbled upon podcasts that beautifully merge Nietzsche's concept of the abyss with storytelling. 'Philosophize This!' dedicates episodes to Nietzsche, exploring how his idea of staring into the abyss resonates in modern fiction like 'True Detective' and 'Neon Genesis Evangelion.' Another great listen is 'The Partially Examined Life,' where they dissect how Nietzsche's abyss metaphor appears in dystopian novels such as '1984' and 'Brave New World.' These podcasts don’t just skim the surface; they delve into how characters confront existential voids, making them perfect for fans of thought-provoking narratives. For a lighter take, 'Overdue' occasionally touches on philosophical themes in popular fiction, though it’s more casual.

As someone deeply immersed in both philosophy and manga, I find it fascinating when creators weave Nietzsche's abyss philosophy into their narratives. One standout is 'Berserk' by Kentaro Miura, which embodies the idea of staring into the abyss through its protagonist, Guts. His relentless struggle against fate and darkness mirrors Nietzsche's concept of overcoming one's demons. The series doesn’t just depict violence; it explores the psychological toll of enduring suffering and emerging stronger. Another compelling example is 'Neon Genesis Evangelion,' where the characters grapple with existential dread and the abyss of human consciousness. Shinji’s internal battles and the show’s thematic depth align perfectly with Nietzsche’s ideas. 'Tokyo Ghoul' also touches on this, with Kaneki’s transformation symbolizing the abyss staring back. These series don’t just entertain; they challenge readers to confront profound philosophical questions.