Haruka(Yuri Maina), an office lady, has a crush on her co-worker Ijuin Kanoma (Nagase Hiroomi). When her mother remarries and she moves into a new house, the one who greets her is the man she admires! She thinks she's happy living under the same roof, but what awaits her is a life with dangerous brothers...! Her actions at that time will change the ending, and her days with the brothers will change. Who would you choose in the end?