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
Rurouni Kenshin: New Kyoto Arc
OVA
46m
Saikano: Another Love Song
OVA
30m
Whispered Words
TV
24m
Shuffle!
TV
23m
Tesagure! Bukatsumono Encore
TV
11m
Tokyo Ghoul √A
TV
24m
All Out!!
TV
24m
Appleseed (Movie)
Movie
105m
Magic-Kyun! Renaissance
TV
23m
Gantz: Second Stage
TV
23m
Battle Angel Alita
OVA
30m
Rockman.EXE Stream
TV
25m
At The Mercy of The Sky
TV
23m
Bird of Fire
TV
25m
