I'm pretty sure "aroused yet don't want to seem inappropriate" is a better definition which is common in romcoms where the MC isn't asexual and/or mentally challenged.
@superoniichan There's nothing wrong with it, but given Matsuri being a young (guy/girl) who's only now really noticing Suzu's assets he's probably embarrassed to admit it due to spaghetti.
cute. Also props to the author for focusing on the sweaty armpit. That part is the best.
And I agree, Matsuri-scented fan will be a hot product. Or even a higher tier, figurine Matsuri fan. Ofc the scent should also be added.