I guess we might have our first Tsubaki graduation. Such a shame, Saorin is an amazing idol so I hope that she’ll be able to stick around and clear her name, but seeing how things went with Taguchi and Ogawa Rena, it’s highly unlikely.
Actually, Tagucchi and Renako were considered "underdogs" of KF back then. Saorin isn't in this case. Profit determines whether she will leave in this case, or maybe if she really wants to leave, there's no help. There's a low chance for popular members to be fired, unless the members violate the rule twice. Saorin is among popular TF members, so I think it's hard to fire her. In H!P history, some popular members who involved in scandal such as Miya was never fired because, IMO, of the same reason: she was too important to the group. We really love to think about fancy things about idol industry, but it's nastier than we expect. Being underdogs means being easily fired if violating the rules
I'm repeating myself but... I don't see clearly why he'd be a boyfriend.
Unfortunately, the media really loves to fuss this rumor up even if it isn't true, and the fate of idols depends on it, actually. If most wotas think like you, this will be much easier for her.