Moto Oshi no Idol ga Tonari ni Sunde Imashita

Yuuka wanted to become a popular idol, but her career never took off and she had to give up on her dream. She is now working a regular job, when her former manager tries to invite her to get into AV!? When she has trouble dissuading her persistent manager, a handsome stranger comes to her rescue! And then he moves in next door to her apartment!? He must be hiding something from her!

(Source: Betsucomi Flower, translated)