the sole heir to the Kogami fortune is seventeen years old. She was three years old when her parents took her to China and never came back. The people who set out to find them claimed the family was dead, but then fourteen years later someone found Suzuka living in a Chinese restaurant. She returns to Japan to meet Megumi, again. As she was being tutored by Megumi on learning how to speak Japanese, he writes in Japanese/Chinese kanji to tell her the reason for his mood swings http://en.wikipedia.org/wiki/Captive_Hearts_(manga)#Characters
A tone-deaf runaway girl who travels with Nozomi, but seems like she'd rather travel alone. When she knows she's being watched, she uses polite language. Her childhood nickname was "Yukippe," and her favorite food is sushi with sake. (Source: ANN)
A normal high school freshman, doesn't want to get involved in anything bothersome or build up unneeded stress.
Rin was a child actress since the age of five, meaning she has ten years of experience in the entertainment business. She is always polite and currently works as a voice actor of entertainment talent agency, Sakuranbo Theatre Group while still attending her third year middle school in Hakuo Academy. She is very close friends with her classmate Sayo.
A very energetic, joyful boy, Yuki is naturally friendly to everyone. He is the first person to approach Nakahara.