ənígmə

Story

Haiba Sumio is a student at a Tokyo High School with an interesting ability... He occasionally falls asleep and wakes up with premonitions of the future written out on his "Dream Diary". With this ability, Sumio helps out people in trouble before anything bad happens, until one day when his peaceful life completely changes. Notes: - Volume 6 contains 1 extra chapter - Volume 7 contains the one-shot Taishou Keisatsu Katsugeki Hyakujuu Yakou (大正警察活劇百獣夜行)

Synopsis via AniList (English).