(This is new! -to me-)
An Idol was fined due to Dating Contract Violation, when judge found her guilty of accepting an invitation to a hotel room by her two male fans. It seems that to gain male fans ,for every idols, means banning them (idols) to meet romantic relationship.
( does Joe Inoue is banned for dating too? Dx~)
More importantly, as an Japanese Idol, one must live in chaste, high moral and image of purity. Previous idols such as Voice actress Yū Serizawa apologized for wearing a ring in 2014; AKB48 singer Minami Minegishi shaved her head in repentance for dating a dancer in 2013; and actor and singer Jin Akanishi was blackballed for marrying fellow actor and singer Meisa Kuroki in 2012, were gone to trial also.