It's not precisely a collection of one-shots. If I remember right, there are some true one-shots but some of it is little groups of 2-3 chapters plus there are a fair number where there's a one-shot and then a few chapters or a volume or two later, they do another chapter about the same people, and maybe another a while after that. So like, a very very sprawling ensemble cast.
It's also . . . the tone reminds me of "Pastel" a bit. The exact opposite in pace, of course, since Pastel is incredibly slow. But that sort of innocent-yet-fanservice-y vibe, with male leads who are typically pretty dorky--not exactly wimps like the male lead of Pastel, but definitely the opposite of smooth. As individual stories most of them are in my opinion not terribly good. But there's something comforting about them; it's lighthearted stuff and young love does pretty well.