Haruko is the little sister of Matagu Shidou, who is always watching her and doting on her.  She is also the friend and classmate of Karen Onodera and Miina Miyafuji.  She is a bit naive, and it always happy and energetic.     ~!After Miina and Karen work out who the sister is, Miina runs away and spends some time living at Haruko&#039;s home.!~

Maiku Kamishiro's past has always been somewhat of a mystery to him. The only clue he has to who is family might be is an old photograph showing two young children, a boy and a girl, playing in a small pool outside of a blue house. In an attempt to find his family, he moves to this blue house and begins working as a programmer. He's living a comfortable life until the day two very different girls show up at his door, both in possession of the same photograph, and both claiming to be his twin. With no way to prove who is a relative and who is a stranger, Maiku allows both girls to move in with him until they know for sure. <br><br>
(Source: Anime News Network)

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2003 Tooniverse Voice actor in Korea Rhee Yong Sin (Hangul:이용신) is a Korean voice actor.  She joined the On-Media Voice Acting Division's voice acting division in 2003.  

(Source: Wikipedia)

Born in Los Angeles, California.  From 1997-1999 she was unable to go by her real name when credited due to SAG stipulations, which led to her using the pseudonym Kim Nguyen when the credits rolled.

Two weeks have passed since the dilemma between Maiku, Karen and Miina was resolved, but their lives are more hectic than ever. Karen has become possessed in her newly discovered brother and Miina is desperate for attention as well, which leaves little time for Maiku to concentrate on his work. Therefore he decides to head out in the woods and set up a camp, where he can be work in peace. But, as always, we have Morino who is up to no good. To make things a bit more interesting, she organizes a field trip to Maiku's camp site, and encourages everyone to make some good summer memories.

Maiku Kamishiro has a problem. Actually, make that two problems. He has two young girls boarding at his house, each claiming that they're his long-lost twin sister! Which one is Maiku's sister? Which one is a total stranger?

Haruko Shidou