Onegai☆Twins (Zappa, Gou)

Maiku Kamishiro is an orphan, whose only memory of his childhood is a picture of his house, himself, and his twin sister. In an attempt to find out about his past, Maiku moves into his childhood home. Soon after two girls suddenly enter into Maiku's single life. One of them is his twin sister, and the other is a perfect stranger. But which is which? From there begins a tangled give-and-take relationship between Maiku and the blue-eyed girls. Find out who is Maiku's real blood relative.

(Source: ComicsOne)