I almost thought Masaya also swung the other way like Takt allegedly does, but his gaze on Shizuku told a different story. That attempted date rape drugging erases any doubt, proof he's a true scumbag playboy unlike the other boys so far. Didn't seem like his first rodeo with this kind of crime, everything happened so smoothly until the boys barged in. He's a real deal sexual predator who deserves to be on a list together with Umimi's scumbag stepdad, and in prison too for good measure.
So here's a +1 to the count of attempted rape in this story. That sexual violence tag is staying there for good at the rate this is going, especially since the fuckboy manager gets another chance to try again. Next time he'll be likely to drug the others too before he gets interrupted again, unless someone wises up to his shit.
I don't know how Takt also got involved, but he was there and boy, was he mad. This was probably the first time ever I've seen him be actually boyfriend-like (despite referring to her as a childhood friend; actions speak louder than words), and more of this from him might even help beat the allegations. If he does it won't be good for Riku's feelings, although right now there is a bigger enemy they have to be wary of.