Damn, who hurt her? Insulting someone's laugh is really fucked up; they're laughing because they're genuinely happy and you tell them that expressing their joy is 'vulgar' and 'ungraceful'? Talk about abusive. No wonder Yae didn't want to go back home for so long; she can't even be happy in peace.
On another note, looks like we're getting a harem ending. Would be happy to see 3 "what-if" endings, 1 for each girl, but after this I'd be very surprised if Uryu picks a single one at all (though I would love to be proven wrong). Also can't forget about best girl Mahiro; she seemed to have a doki-doki moment a few chapters back when Uryu told her he'd make her happy as well.
As always, thanks for the TL!