A Chaotic Journey Through Endless Worlds

A tech-savvy big sister with green hair and twin tails builds a sci-fi time-travel device called the Reverse-Time Ark.

An unlucky, scheming boy who only pretends to be a little girl becomes its test subject. He's sent back to the distant past to gather data and, while he's at it, do some sightseeing.

But a famous mastermind has already calculated all of this and foretold it a thousand years in advance.

So the Reverse-Time Ark is intercepted mid-journey and ends up stranded in Britain in 1930.

When the adorable little boy opens his eyes, he realizes he's somehow landed in a rather extraordinary place... He hears people call it Hogwarts???

The high-tech Reverse-Time Ark has run out of fuel, and he's fallen into an era that exists only in uncertain, possibly unreliable historical records. This is a truly awful situation...

But it's fine... He just needs to find some fuel...

He tells himself reassuringly.

But even if he does find fuel, that famous mastermind won't let such a delectable little cutie return so easily to the deranged, dead...

This novel and its characters are entirely fictional. Any resemblance to actual persons or events is purely coincidental. Do not imitate.