Ohh let me make the explaination for the story haha
Story Summary: You receive a mysterious letter from Shouya, who asks for your help as a detective to find Eri Tsukishima, a missing girl. He provides a set of photographs as clues — but something is off. In each era, Eri looks exactly the same, untouched by time.
As your investigation deepens, you uncover traces of a serial killing case, cult rituals about reviving loved ones, and eerie footage of Shouya desperately seeking Eri in the media.
In Chapter 2, the perspective shifts — you become Eri. Each version of her, in different timelines, is brutally murdered by Shouya.
Chapter 3 conceals certain truths. You learn Shoyua once turned to a cult in hopes of reviving Eri. But eventually, he comes to believe that Eri’s soul is reincarnating endlessly into innocent girls… and that by killing them, he is "freeing" Eri.
The ending is left open. Is Shoya a delusional killer, trapped in madness and grief? Or… is Eri truly trapped in a loop of rebirth, cursed to return again and again?
Themes of Loop:
Eri’s Loop:：The Beautiful Tmes Never Fades
She died at the peak of her youth — the most beautiful moment. Her soul was pinned to that endless night. The moon wanes but never disappears; the lights dim but never fade. She dies again and again, but is never truly gone. As long as someone remembers that golden age, as long as someone is consumed by desire... Eri Tsukishima will return.
Shouya’s Loop: The Curse of the Cleaner
Each time he “cleanses” one Eri, he meets a more twisted version of her in the next loop. Once a man on a mission to purge Eri’s echoes, he now questions— Has he become the monster himself?
The Economic Loop: The Bubble That Never Bursts
In 1980s Japan, people believed the boom would never end. But humanity never truly wakes up— New bubbles are always brewing. New “Eris” are always being born. The economy will rise again. The frenzy will return. The collapse will repeat. History doesn’t repeat, but it rhymes.