All his "ad-libbing" with Kaoru was basically sexual harassment because Kaoru told him to stop multiple times. Yuuki just took advantage of the fact that Kaoru won't want to start a scene during their performance.
What he did to Masashi was sexual assault, and not only should he be fired, he should be prosecuted! Kaoru and Masashi should get a restraining order against him.
I don't give a flying fuck about Yuuki's trauma with straight men. Your trauma does not grant you permission to break up queer relationships that includes someone who used to be heterosexual.
On that note, why do fics like this make sexuality seems black and white. Like you can ONLY be gay or straight. Masashi and the dude Yuuki dated could be bisexual. The guy Yuuki dated was just an asshole. Masashi is bi. Just because he's dating Kaoru does not mean he wasn't attracted to his ex-girlfriend. Bisexual people exist
I saw someone talking about this manga in passing 3 years ago and i hoped the mom would divorce her husband and live out the last year of her life however she wants. Kinda disappointed that she stays with him cuz wdym it took a potentially life-threatening disease for her family to gaf about her? I hope Tomoe convinces her to divorce that useless man.