Senpai wa Otokonoko severely under delivered in the end, and not because of the topics treated. Just awful pacing, narrative, and overall decisions what to develop. It felt like three different seasons mixed into one, and nothing got the time it needed and deserved. The whole "muh parents" arc and the "old friends from school appear" at the second last episode delivered the kill shot.
Let's be fair, there is no law or requirement written anywhere that a webtoon artist should know about dramatic technique. Just the intention to create something is enough for that, and there's nothing wrong with it.
But the moment a studio invests big money into its anime production you should expect at least one educated guy to take a look at it and say ce nest pas possible. We need to cut and reorder things. But none of that happened, and we got lukewarm and underwhelming nonsense.
