 If you liked
Sorenari ni Shinken Nan desu.
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 ...then you might like
Bokura no Shokutaku
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Both have two men entering a romantic relationship together. Both have one of the sweetest kids put to manga. In Sorenari the kid is one of the men's daughter, rather than a younger brother like the kid in Bokura. Both have moments where one of the characters takes care of the other when they are sick and overall are very feelgood imo.