New guy is falling in love with Ibuki. And because of the NTR allegations they just cleared, he's going to go to Tomo and say "Are you in love with Ibuki?" Tomo will say no, then he'll say "I am going to be straight with you, I am in love with her so I want to make her fall for me / I am going to ask her out. I just wanted to be honest with you cause you are my friend and if you are in love with her I will back down"
Then Tomo will wallow in self pity and think that Ibuki is better off and better matched with a tall handsome guy and will give his blessing to him to proceed. Then there are some possibilities: Ibuki and Tomo will confront each other after Handsome guy's confession, Ibuki will ask him if he's really okay with her being with another guy and Tomo will continue to wallow in self pity and won't admit his feelings so she will get with handsome guy but she'll be unhappy or obviously still in love with Tomo and possibly handsome guy will break up with her and convince her to properly tell Tomo how much she loves him and then she will confess and Tomo will then admit and be with her. (long winded, annoying version, most likely what we'll get)
Other possibility is after Ibuki confronts Tomo and he admits he doesn't want her to be with anyone else and either get together then and there or keep doing the same dance for a little longer but with everyone "rooting for them" (that's the absolute best version, not likely what we'll get).
Final possibility is that after Tomo and Ibuki confront each other and Tomo doesn't admit his feelings and then Ibuki gets with handsome guy, handsome guy will comfort her, have a sweet moment and she will blush and end up kissing and then she will start having mixed feelings, actually falling for him. Then after that: chaos. I know ppl think this is definitely not something to happen cause series has been on the rom com slapstick side, but there's already a manga (that was axed BTW) where the premise is exactly the same and the "Cool girl" gets with the MC's rival and that's even after the rival goes to the MC and asks him if he's really sure not fighting back. So don't sit too comfy thinking it's impossible.