Certainly, the first half of this series is ... well, not very good. The writer insisted on using cheap and unrealistic manga/anime gimmicks to bring the two protagonists in embarrassing situations and to bring them closer, it really felt like a half-assed effort that couldn't possibly form a believable plot.
Just when I thought that Unbalancex2 was destined to be nothing more than thinly-veiled ecchi fanservice, it actually started to deviate from that. The plot started to thicken, manga drama gimmicks (at least the really cheap kind) became rarer and rarer, and the characters had reached a point in development where I could really get behind them and understand them.
It took a while, but by the end the series had managed to make me care for both protagonists and to actually root for them to get together (which wasn't the case for majority of my reading). I liked the protagonist, especially how he didn't have trouble seeing through people and the usual drama tricks didn't seem to work on him. He had plenty of faults, but he wasn't a helpless stand-in for the reader that was just getting dragged along wherever the plot needed him to be.
All in all, Unbalancedx2 reaches a point, somewhere midway, where it seems like it's an entirely different work before and after. It also explores a lot of the moral implications of a teacher growing feelings for his/her students. In the end the answer it provides (don't be a teacher anymore) is nothing new and rather simple, but it works well enough and I enjoyed the fact that people were not afraid of calling her out on the sheer insanity of pursuing a relationship with a student.
The art was good, the plot started as little more than fanservice excuses but ended up being solid, an I liked the characters introduced.
An 8/10 from me, if only because it managed to make the last few arcs not suck, something I honestly had not expected.
tl;dr: Hold of judgement on this manhwa until after you've read the first 5 volumes or so.
