Her Regretful Days of Killing Time Anime Details and Episodes A tale of immortals faced with the fragile mortality of their human companions. Series info Watch free DetailsFormatMangaStatusFinishedScore64/100SourceOriginalCountryJapan GenresDramaFantasyRomanceSlice of Life TagsHeterosexualTime SkipMonster GirlAdoptionEnsemble CastTsundere RelatedBackyard Junk Universe (Related)