From Mangaupdates

Fuuta, who has average looks and is a salaryman never had luck with women. However, one day he met a strange girl in a dating agency. She always wears a different mask whenever they go out for dates. One day, Fuuta saved her from what he thought were thieves, and she confessed and proposed to him after that moment. On the night they got married, she takes off her mask and finally reveals her identity. She's the super-idol singer Kirari who Fuuta admires! Thus starts their life as a married couple.