tl;dr: A decent manga with some good comedy/wholesomeness, but let down by its lack of any development and too much repetitiveness
Typical SoL style story, which center's around the 3 sisters/brothers. Most chapters focus on the main pairing in the series, with the obvious tsundere Maiko and the dense as hell Keisuke and a lot of the chapters deal with Maiko trying to somehow convey her feelings while Keisuke acts all oblivious towards them. There are a few chapters that focus on other pairings such as the one between the eldest siblings (which is also very wholesome), but most focus on the main 2.
Given how it's
a 4-koma style manga, you normally wouldn't expect too much out of the story, but other series' such as Senryuu Girl shows that even those formats can have development. This story, however, doesn't really have that much. There are a few glimpses here and there, but nothing really everlasting. In a gag manga like Gekkan Shoujo where the romance is more of a background focus it can work, but in this case, where romance is the central theme, this lack of development really hinders enjoyment.
Art is really good, characters look nice and they all look adorable when they're in their chibi forms (which look similar to Kaguya-chan from the Kaguya-sama manga btw) or when they're blushing (which happens quite a lot)
I'm kinda on the edge with this, on one hand, I like some of the characters because they're fun to watch/cute, but on the other hand, some characters like the main male lead can be kinda annoying at times because of just how dense he is. Most characters find themselves in your average tropes like the tsundere in denial, the very polite yet somewhat dense worker, the healing onee-san, etc. but none of them I found to be too bad (apart from our overly dense male lead) and they all provided some good laughs
I won't lie if I were to say I'm kinda disappointed in this series, mainly cause I like these types of ones where there are already multiple couples kinda predetermined by the plot. I don't think the manga really is over though, even if it was axed and now the author is publishing it on his own, the way the most recent (scanlated) chapter left off doesn't really give off any conclusion vibes