 If you liked
Ranma ½
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 ...then you might like
Amagami-san Chi no Enmusubi
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Both works are similar in that the main plot line is about an impoverished MC guy being engaged to marry against his will to one of three sisters in order to solve a succession crisis of a traditional Japanese institution - a Shinto shrine in one case, and a martial arts dojo in the other.
The succession crisis is caused due to the owning family having only daughters and in need of a son-in-law.