I wanted a more proper build-up to Shino's moment, but yeah. It was still wonderful. Hiroyuki cannot be stopped and neither can Shino.
I thought so seriously about how Hiroyuki would solve the "chicken and egg" problem of Naoya stopping himself from falling in love but love being a precondition for three-timing, and then he just had Naoya suddenly outright say he was in love with Shino. Could've used a bit more explanation about when he realized this, but all right. In any case, it makes sense that recent chapters had Nagisa and Shino seem like a kind of united front, because they were effectively already at the same "level" of qualification for being in a relationship with Naoya.
I hope Shino's antics are going to motivate the other girls to lust after Naoya more openly. She at least fulfilled that role well for the dates arc.
Not sure what to think about Mirika. I wonder if she will stick to her guns tragically, or end up deciding to share their one brain cell on this issue. Probably the latter. There's also that fifth girl who was foreshadowed by the color scheme, the loli from the festival, but she's been so absent that I think Hiyoruki may have decided to cut her. That, or this manga is far from over and she'll be reintroduced at some point.