In this chapter, we learn that Masaki is the only one in the club who enjoys having sex with the girls. We learn that he's also the one who's in charge of the "mixed bathing" , which is basically a fancy way of saying that the girls are having sex while you're in the tub with them. Masaki and the other girls are in the middle of bathing, and they're doing it in front of everyone else in the room. We're not exactly sure what's going on, but we're guessing it's because Masaki has sex with another girl. We also learn that the other girl is pretty, and that she's sitting next to Masaki in the bath. We don't really know what to make of this, but Masaki's clearly drunk, and we'd be surprised if he didn't come in and have sex with us.