 If you liked
Henjo: Hen na Joshikousei Amaguri Senko
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 ...then you might like
1-nen A-gumi no Monster
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Is this Love? I think it's just ecchi girl's crap and yeah, you can call her an aggressive girl. However this is an interesting manga. I recommend them as something worthy of your bica if you have read one of them.
- both have romance+strange girl.
- The main character who is not interested in heroine