So I am confused. We had a flashback to them explicitly having sex in the karaoke parlor, but now it seems like they're suggesting they didn't do anything until they got to the hotel? Or Shion was like....trying to hypnotize or reprogram her memories? Chapter 4 just seems really weird, and honestly mostly makes Shion look -worse-?
Either way, yeah, this ended up pretty problematic in the end.
It's not okay to get your friend drunk and take advantage of them!
...Unless of course they decide after the fact that they're happy about it, Then hooray, girlfriends!
Yeah, no, it still isn't okay. Sure, it's not -as bad- if Nozomi literally asked her to do it, but Shion still should have -turned down- the girl who was too drunk to make an informed decision.