 If you liked
Kuzu no Honkai
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 ...then you might like
Fuufu Ijou, Koibito Miman.
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Similar in terms of the characters being paired together (who do not love each other in the beginning), but they both love someone else. The main characters try to collaborate together in order to confess/get with who they love. Deals with relationships, childhood, adolescence, etc. Fuufu Ijou is more upbeat though