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...

In modern Tokyo, exiled ninja Koa Ruruka finds her world upended when she meets Hanako Reina, a gentle girl at the heart of countless urban legends. Reina, who is known as the Quiet Crow, gives off a very mysterious aura, despite being strangely magnetic. Ruruka’s fierce urge to protect her soon ...