Ayumu Tamari suffers from a condition known as "Crystallization Syndrome." In moments of high stress, parts of his body begin to crystallize and become extremely difficult to move. Unfortunately, Ayumu's severe social anxiety makes him completely unable to speak to anyone in his class, and ultimately causes him to crystallize so frequently that he has to repeat a year in high school.
Ayumu's only solace is his homeroom teacher, Kouya Onihara, whom he affectionately refers to as "Oni-chan Sensei." Kouya collects and studies crystals, and he finds Ayumu's crystalline body both beautiful and fascinating. With his stress from school compounded by the complexities of a forbidden student-teacher relationship, Ayumu struggles to find normalcy in his life while managing his emotions and trying to prevent complete crystallization.
[Written by MAL Rewrite]+ More
Characters & Voice Actors
Recommended for you
Kaguya-sama: Love is War
TV
25m
Perfect Blue
Movie
81m
My Hero Academia 2
TV
23m
Land of the Lustrous
TV
24m
Parasyte -the maxim-
TV
23m
Bakuman.
TV
24m
The Light of a Firefly Forest
Movie
45m
Natsume Yujin-cho the Movie: Ephemeral Bond
Movie
104m
Attack on Titan Season 2
TV
24m
Cowboy Bebop: The Movie
Movie
115m
Puella Magi Madoka Magica
TV
24m
Major S6
TV
24m
