Noriko is the only child of one of the wealhtiest man in Japan, Kin Kaneko, the CEO of a smartphone industry called Infinity:Zero. Kin wants her only daughter to marry with a soldier man but Noriko is a disciplined and determined office lady who doesn't think to marry with someone to doom her life so her father put something that would attract all men which is a 500 million yen inheritance after Kin's death. Many men come to Noriko to marry her for the huge amount of money. However, her father said that the men who would win that money after his death would be chosen by freewill of his daughter, Noriko. One day, Noriko rents someone called Mamoru, a fake boyfriend, to end that inheritance stuff and decrease the pressure of marrying with someone by both of her mother and father from an online date app.