I don't know that this volume really deserves 5 stars, but I'm giving it anyway just because I'm so fond of the series.
It is a liiiiiiittle slow-paced...I think I just got massively spoiled by how full that first volume was. An absolute ton happened in that one, and in the two shorter volumes since, it's sort of just...trailing quietly along, with not a lot of significant development? Which is okay, but I am still a bit confused by the pace in their relationship. Moving slowly a year into dating is perfectly reasonable, and I very much do not mind fluffy, sfw stories, but I kind of don't get how they've lived together for a year and still don't seem to be that physically intimate? Unless we're meant to understand anything more significant is just happening off the page.
The main focus of this volume is kind of about that: Hashimoto realizes he's been too passive in their relationship and isn't doing enough to show Shirase how much he loves him. He makes attempts to be more proactive: touching and kissing Shirase first, inviting him out on a weekend trip, telling Shirase that he's trying to actively show him more affection...
And that's the part that really leaves me hooked on this series. I love communication more than anything, and I adore how there isn't a smidge of misunderstandings in this series that's due to not talking to each other.
There IS a lot of talking to each other and misunderstanding the context...for example, Shirase still thinking that Atsushi is romantically interested in Hashimoto, and Atsushi still thinking that Shirase is dating his brother...but that's just because they're making assumptions based on conversations they are having, and not realizing there is anything to clear up.
But Shirase doesn't hide anything from Hashimoto, which is the important part. When he runs into Atsushi on their weekend trip, he lies to Atsushi about being there alone (which leads to Atsushi panicking and thinking his brother is there), but within a minute or two of being back with Hashimoto, he tells Hashimoto (a) Atsushi is there (b) he doesn't want Hashimoto spending a lot of time with him (c) that's because he's jealous, because Atsushi is interested in Hashimoto.
I love that. I love that he's upfront about the jealousy, that he tells Hashimoto what he's feeling and why, and that he's giving Hashimoto the space to deal with it. Which might happen in the next volume? Hashimoto was already thinking in this one that he needed to talk to Atsushi about the situation and turn him down, which will be a fun scene.
Meanwhile, Ren is finally talking about moving on and finding his own happiness! Love that. I have no idea who his romantic interest might be, but I hope if this series trails on that we'll be able to see some of that.
I don't know if all of the meeting-each-other-through-an-umbrella-in-the-past was necessary, but it was really cute, and fun to see them as their younger selves. Especially the Kumada brothers. All the relationships are just really warm and fun and complicated without being painfully dramatic.
So this is just an ongoing feel-good read for me, and I'm cool with that as a genre.