tl;dr: A manga with little plot but good paced hilarious antics with a likable cast.

This manga is a simple gag manga that isn't a straight 4-koma, though it does have some of those, but feels pretty similar in that it has incredibly short chapters, around 10 pages, that each tell a small story that's centered around a few comedic events. This comedy does get somewhat repetitive, but because the pace of the manga is so fast it never really feels all that stale and constantly hilarious, so overall it is quite solid and enough to hold up the manga on its own.

The majority of the comedy is centered around the cast of characters and their unique personalities. These characters are generally pretty flat with only a few defining traits, but the manga makes good use of them, especially by having a lot of interesting interactions between the various characters. It also feels like the author did their best to make every character likable, in that it feels like with a lot of characters they start out with a certain character trait as the focus, but if they're ever shown with another character trait and that seems to work really well that instantly becomes their defining character trait. Despite it making characters somewhat inconsistent at times, I would have to say that this worked pretty well because I found essentially the entire cast pretty likable. If this was a more plot focused manga this may have been an issue, but it's all comedy with essentially no plot so it's really not a problem at all.

Ultimately, there really wasn't much of any plot at all. There's some development here and there with Sena and some development at the end with Ashisu that serves as the core of the ending. Still, all in all I wouldn't call this plot good and it doesn't feel like there was enough substance to it for it to be that significant. The art was reasonably good and worked well with the tone and style of the manga.

The sequel series was similar but kind of pointless. You might as well read it since it's so short but don't expect much.