Gotcha! If Seimei would've returned it, I think Ritsu would have let it drop pretty quickly and gone back to his normal, more polite self. We can probably just say that it happened, Seimei briefly got to see Ritsu be uncharacteristically blunt, but it passed and all is well again. Like Seimei, Ritsu wouldn't start acting differently around him because of that or anything.

Ritsu is honestly way too inquisitive and likes to spam questions at people he's interested in, so I'm a little concerned for Seimei if he doesn't know how to lie.. I'm super excited to see where this CR goes!