 If you liked
Saikin, Imouto no Yousu ga Chotto Okashiinda ga.
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 ...then you might like
Mikakunin de Shinkoukei
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A slice-of-life comedy about growing up with family and childhood friends with a supernatural twist.
Mikakunin completely lacks the Ecchi component and has more slap-stick moments. Both series have a large cast of wholesome likeable characters. Both feature love interests that live in the same house.
Both anime are about a shy main character learning to be more confident in themselves.