Huh? Your complaint was about the manga. You said nothing about whether it's enjoyable or not, now you're just back peddling. Either way your point is illogical and your reasons are bad. I'm not telling you to like it, I'm telling you to not be stupid.

Socially deprived and awkward people not understanding social dynamics? Nuh-uh, no way, never happens.

Honestly, if you're going to complain about something complain about how obvious it was she was going to lose her powers when she started to get a social life. Her not confronting Haruka about losing her powers is nothing out of the norm. She thinks the only reason she is staying with her is for her powers. So why would she tell her?

Perhaps you should smash your head against that wall.