This is Jin from Tosei and…someone. Shingo? I’m not really sure. But it’s pretty.
Definitely Shingo, since people ship Shingo/Jin pretty frequently in Toseiland. (It’s a strangely cute pairing, actually, given that the fandom depicts Shingo as, well, as Iyarashingo and Jin as this adorably innocent figure that Shingo ironically looks after despite being Shingo.)