Oshi ga Gitei de Koibito de

National Idol x Fanboy = Love in the Family! Mizuki's secret idol, Riku, has become his brother-in-law due to his parents' remarriage! On top of that, they found out that his bias was Riku and that he had been sending him fan letters. Mizuki is upset that he has to live with him, but...?

Original:
Vol1, Vol2