A fluffy, cute, and fairly short read.
When a manga's story is simple, it relies on other aspects to carry it, such as its characters, artwork, and more. In this case, the characters are fairly plain and fit into the generic archetypes. We have an innocent senpai who is insecure about her child-like stature along with her kouhai who is struggling in his job but is devoted to improving. There really isn't much else to comment on them; it's such a short read that there wasn't much time to develop upon the characters.
The comedy was bland at best; I don't think I so much even
smiled throughout the series. For a series tagged with romance, there wasn't much of it, only intensifying towards the final chapters of the manga.
The artwork wasn't anything special, but it got the job done.
All in all, "My Short Senpai Is Way Too Cute" is another average series you can read whenever you feel bored and are looking for something straightforward.