Momoko is a strange and hyperactive young girl who is also a martial artist in a special form of martial arts that only members of the twelve Zodiac Masters of Japan can learn. She is associated with the dragon of the Chinese zodiac. She wants to become Koushis bride in order to produce a strong son with him as her father told her that since she is a female she is currently unable to master her familys martial arts techniques effectively. Momoko shares a strange relationship with Koushi which has been compared to that of a dog and its master in the series itself. Momoko is very adamant about getting married with Koushi and often tries to do the best she can to please him in any way.