For as long as he can remember, 16 year-old Hisataro Oba has found himself randomly, several times a month, caught in a time loop he dubs The Trap: waking up on the same day nine times in a row, with only the events of the final day of the loop becoming the canon version of the day for everyone else in existence. Having realised this, and in part as a coping mechanism, he has been able to exploit The Trap — cheat on a test, win a bet, etc. — but now things are different. Because now a murder has been committed and he would like, if possible, to avert it in the ninth and final version so that it does not become the reality for everyone else.
The Invisible Event 