Tomo Takino is extremely energetic and competitive, despite being nonathletic and a slacker at the same time. She randomly challenges people to competitions she can't win. She tends to irritate everyone around her, but especially Yomi, who has been her classmate since elementary school. Tomo's character is extremely impulsive and she never considers nor cares about the consequences of anything she says or does. However, on the occasions when Tomo has actually been inspired to concentrate on something, she has demonstrated that she is quite capable.