The Twins are three people: Maiku is an average young man that is about to have his life turned upside down. After spotting a house on television that appears in a photo that was left to him by his parents, he decides to go live their. Its not too long before two girls, Miina Miyafuji and Karen Onodera, show up on his door step claiming to possible be his twins, as well as wanting to stay at the house with him.