@BZo1480
Well, as i said, Ikumi didn't expect that. She even told off Ria (the one with braided hair and cat mouth) for the fact that Ryoichi came along. But it's not like they would have backpedaled at that point.
I've re-read chapter 2 and it doesn't look like Ryoichi was suspicious of anything, tbh. At this point Ikumi can always say that Asahina was just playing everyone for a fool, and renounce their "friendship" with Asahina. And i doubt bullies give Haruto much credit to consider that he can figure it out on his own.
If any suspicions about the sincerity of the confession would arise though, Asahina would most likely be force by the bullies to overcome that somehow.
@Askorti
Yeah, she is that much of a pushover - doesn't want to bother her family over anything that happens to her. Ideal target for bullies, basically. The cause was her breaking Ikumi's mirror that was (most likely, not really) pretty expensive.