This chapter started out so wholesome, just to go full psychological in few pages, I picked the wrong day to stop sniffing glue...
But seriously, what Asahina has is both
False Memory Syndrome and
Dissociative Amnesia, for those thinking that it ain't possible for her to be like that.
Asahina memory of being bullied and forced to make false confession were "overwritten" by pleasant times spend with Haruto, being treated like a normal person for once caused her to repress past, similar to having
Fantasy-Prone Personality.
It seems like the time where THOT trio weren't bullying Asahina, gone out spreading true rumours about their false confession instead them really going out, since Asahina instead feeling guilty actually expressed joy by dating Haruto in front of them. It backfired on her.
I like Ryouichi for protecting Haruto, but believing rumours without hearing out Wakaba in the first place seems too hotheaded...
Thanks for the scanlation!