The Dog And Its Reflection

The day Kei Tsukishima had decided to eat less hadn't been a particularly bad one. He just needed his weight to go back to that constant number and then he would be fine again. The feeling pressing against his ribs would go away, and then Tadashi wouldn't have to worry about him anymore.

Tsukishima sat up, pushing his headphones down around his neck. "I'll walk you to the station."

"No you won't," Akiteru called from the kitchen. "I'm making pork Katsudon. It's nearly done."

"I'm allergic to pork," Tsukishima replied before walking toward the door and putting on his shoes. Tadashi scurried after him, eager to get out of the crossfire.

They'd just made it through the door when Akiteru popped around the corner again. "Since when-"

Tsukishima closed the door before he could finish.

Or

A fic that explores Kei Tsukishima as autistic and how that impacts his views on his body and his control over it.