When Atsushi was 7 years old, they started to twitch slightly sometimes. It wasn't much, but over time it got worse. By the time he was 13 he was diagnosed with Tourette's syndrome, which causes them to sometimes make sounds, movements, or say random words. It is completely out of his control, but he still gets upset with himself when he tics. (Cover photo isn't mine!) Atsushi uses he/they pronouns in this fanfic btw (Updates on wattpad every Friday, and updates on AO3 every Wednesday. My AO3 account: t0by101) I'm more active on AO3, so I'd recommend to read the fanfic there if you like it.