The story is setup so that bell ends up with ais.

I mean liaris freese exists for bell because of her so....

While it is not confirmed, it seems that Bell will end up with Ais. However if it goes that way, Oomori should give the rest of his harem a happy ending (and not pushed to the side like other harem animes). Others do say that they wouldn't mind a soft harem ending (maybe 2-3 girls), I mean it's an eh for me, I don't really mind who he ends up with.

Bell will most likely end up with Ais in the end but what the other girls in his life will have to say about this is something that I am curious about.

I just hope that Tiona and Bell do not ever get into a conflict and Bell defeats her because I am starting to get the impression that Bell might be her type. If she is anything like her sister then she might become extremely possessive.

I mean Finn has denied Tione's advances but she just will not get the hint.

Although, a fight between her and Ais over who gets Bell would be entertaining.