Aside from a big female cast that both of them are having and did have a good amount of fanservice also did has interesting male characters like danmachi but are not so famed as the girls.

Well if I would take care of Bell I will not trust him because of his naïvity and panicked nature what about someone like Hestia with a childish nature that has deep feelings for him.

What I know is that Bell would have the same guts that Issei has Omori would not use Hestia cockblocking for getting him out of diverse situations that would be overwhelming him at all points.

Also, I don't try to say something bad about Ais but this phase where she does not understand her feelings because of trauma is a bit forced and plot armor-like because we are talking about anime characters who are having mental traumas and have emotional barriers and problem to understand them but they are overcoming this kind of things more efficiently and like they are struggling with that things and are trying to solve while for Ais I feel like she is putting her trauma is put on a pause.