"Inaba Miku has had a very painful past-- Her father died of a plane crash when she was just little girl. Her mother became so depressed that she committed suicide. Miku, her big brother and sister(Shizuka and Yusei), and her younger sister (Yuna)were the only family she had left. Soon her brother went to study abroad in America. So, thinking they needed a fresh start. Miku, Shizuka, and Yuna moved to Tokyo. Despite the painful past Mika has endured. She is a very cheerful and happy girl, that has an optimism for life. Whenever she smiles, the people around her can't help, but smile too. When in Tokyo Mika transfers to Hikari Private Academy. There she makes some new friends-- Hayama Takeshi, Matsuyama Naoki, Hagiwara Kousuke, Miyata Nao, and Okamoto Kiriko. Soon, Takeshi and Naoki soon find themselves falling for Mika... Also, Shizuka and Yuna find out the shocking truth that Mika was adopted. The truth is Mika is the only daughter of a very wealthy family-- Ogasawara Ayano. How will Mika react when she gets the news??.