Onizuka-chan to Sawarida-kun isn't all together uninteresting or incompetent. Honestly if you haven't read a lot of generic RomCom manga you might actually get a lot of mileage out of reading this. Progress is steadily made, the art is decent, and the pacing is efficiently swift. While the characters are rather shallow, to an inexperienced reader who hasn't seen a lot of tropes, this might not be a major problem. Afterall, my problems with the series are a little more personal in the end.

The main male lead Sawarida gets great pleasure out of touching the other creatures appendages. He wants to touch the wings, antlers, and tails of the other kids at school. This is all framed really awkwardly and kind of uncomfortably. If watched the guy touch the other characters in a kind of fetishistic way doesn't bother you, I don't see this Manga bothering you much. If it makes you squirm reading the first chapter I'd recommend just dropping it then and there.