 If you liked
Mahoraba: Heartful Days
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 ...then you might like
Kono Aozora ni Yakusoku wo: Youkoso Tsugumi Ryou e
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Both are harems about a single guy and several girls, all students. the primary difference is that kono aozora is the drama and serious version, focusing on the past lives of the female characters, and the female characters all has a sibling relationship with the male lead(wataru) while mahoraba is the comic version, and all the female characters are seemingly attracted to the male lead (ryushi)