-I don't know much about We Never Learn.
-For the Quint Manga. With Nino it was established from the beginning that she was a cunt and was the last to accept the MC so her slow defrosting and love realization redeemed her for me. Ichika caused unnecessary drama with her bullshit so she is mostly at fault. In fact, I feel like the writing has been weak lately, with at least 2 girls fucking over their chances with the MC because of the aforementioned drama Ichika has caused. The "Rena" thing could have been this but Fuutaro clearly doesn't give a fuck and barely affects anything.
-Hibari is fine, everyone in the manga is autistic for MC's cock anyway. The real culprit would be the MC's master who introduced "serious" battle shonen wankery into the supernatural ecchi harem comedy. And now they are fighting some cunt now while age regressed after some training. I really can't follow it anymore.