 If you liked
Goshujinsama ni Ki wo Tsukete
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 ...then you might like
Sorenari ni Shinken Nan desu.
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The 5'th and 6'th chapter of Goshujinsama ni kiwotsukete -' Family pop' have a similarly sweet relationship between a child and two males. There are some differences, but the feeling and mood are equally nice!
Sorenari ni shinken nandesu is a lot more serious, though. If you enjoyed one of them there is a high probability you might enjoy the other as well.