Abe no Seimei helps Minamoto no Hiromasa fulfill his wish and escape the suffering of reincarnation. To do so, Seimei transmigrates through different periods of Hiromasa's life in search of the key to the space-time continuum.
Setting: Seimei, appearing to be in his thirties, arrives in the happy-ending timeline with the memories of the previous timeline, the bad-ending timeline.
The happy-ending timeline is divided into several smaller timelines. When the wish in each one is fulfilled, that timeline closes, and another smaller timeline begins, containing only fragmented, hazy memories. This repeats until they reach the point at which the bad ending occurred. Only by building bridges between the timelines and having the happy-ending timeline replace the bad-ending one can Hiromasa's soul truly be saved.
Theme: After a thousand years, I still love you.
