Forced myself to finish it yesterday. I could probably spend an hour nitpicking every little thing that irated me about this series so for the sake of my time and avoiding spoilers I'll keep it brief:
Enjoyable SoL light drama/comedy up until it switches focus entirely to "S" about 1/3 through. After that it's just drama, backstories, more drama, high school kids deeply psychoanalyzing one another yet entirely unable to think for themselves, drama, a character with more plot armor than the goddamn Batman, more drama and some more more backstories. Once "S" arc finishes, which is about 2/3 through, the rest is basically just filler backstories with, you guessed it, more drama. This is also the point where any amount of "romance" appears, if entirely random crushes that never really go anywhere can be called "romance".