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シスコン兄とブラコン妹が正直になったら / 오빠와 브라콘 여동생이 솔직해진다면
A brief description of the SISCON ANI TO BROCON IMOUTO GA SHOUJIKI NI NATTARA manga:
Even in high school, Ritsu and Uta get along well. Suddenly they had to pretend to be lovers! The comedy about brotherly-sisterly love begins!