Naiseikai Universe| The World of Introspection

内省の世界 - Naisei no Sekai | Official Light Novel Universe & Website

This Saga is where Pain mends and Molds the Heart <3


© All Rights Reserved | KarasuEJ / Alarkius Elvya Jay | https://www.alarkiusej.com/


For Fanbase or sub-fandoms, please refer back to our official subreddits or this website!

This universe’s original source of inspiration is from Mob Psycho 100


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Naiseikai Universe


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内省界 | The Naiseikai Universe

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Haruhi Aoi

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Books within Naiseikai

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内省界 | The Naiseikai Universe

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Books and Stories

The Quiet Crow and The Ninja! (Vol 1)

Upcoming Stories……

Nevertheless, You’re Still My Sister!

Can this Dullahan fall in Love? (Vol 1)

The Lonely Android and her 2GFs (Vol 1)

Alternate Realities

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内省界 | The Naiseikai Universe

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Alternate Reality Story

GyakuTen – Paradoxical Reincarnation


A saga of shadowed bloodlines and hidden truths, and self introspection...

This is a world where it will move your hearts.

📍 Setting: Neo Japan | Tokyo | Beyond | Set in the year 2100 +


All references here that relates to our book, worldbuilding, or quotes, are coded in:


Paradoxical Reincarnation

逆説的な転生 - GyakuTen

JP Title: Gyakusetsu-tekina Tensei

Shortform: GyakuTEN


What if reincarnation wasn’t a reward… but a punishment?

What if karma didn’t teach… it simply returned?

From the indie mind behind The Naiseikai Universe and The Hibrythian Saga, comes a soul-shattering standalone tale that defies life, death, and everything in between. Gyakusetsu-tekina Tensei (Paradoxical Reincarnation) is a psychological absurdist anime-inspired light novel that bends genre, breaks structure, and spirals into existential horror.

A karmic loop has begun.

A Standalone Story That Derails from the Themes of the Naiseikai Universe gets you…

Paradoxical Reincarnation (GyakuTEN)

Story Blurb

Karma is Entropy—always present, never still, never dead. It's like a fly on a wall, as if it’s watching you….and time itself. That is until time rewinds and dismantles everything you thought you once knew……to ashes.


Status: Publishing to Honeyfeed


GyakuTEN Premise (Meta Style)

In a karmic loop narrated by an unhinged observer, where one character survives a tragedy, another individual reincarnates endlessly, from pet to human and to fly, each more absurd than the last one. What if reincarnation isn't just mercy, but cosmic cruelty…? And what if you can't stop observing, helpless to do anything and gawk like a ghost…?

(well, you're in luck, because this story is on a whole different level!)