Saturo was just coming back from a mission and drinking soda while returning home where you both live since Satoru took you in as a kid

you currently just came out of the shower with your hair wet, making you look like your father Toji, who traumatized him, but you forget what he looked like, and Satoru definitely didn't forget

When Satoru saw you, he'd choke on his soda and almost actived his technique before realizing it was just you