Mystery anime of Summer 2021Jul–Sep · 2 works← Anime in Summer 2021Action 8Adventure 1Comedy 7Fantasy 17Isekai 7Music 3Mystery 2Romance 4Sci-Fi 5Slice of Life 7Sports 1See every Mystery anime →Higurashi: When They Cry – Sotsu15 episodesDMM TV5 moreThe Detective Is Already Dead12 episodesHulu6 more