Такішіма Сатору

Kei and Sui's dad, age 36, who always looks young and baby-faced. He is very energetic and outgoing. Though he is the CEO of the Takishima company, he likes to escape from work and lets Kei handle his job, usually because people at business meetings tend not to take him seriously as a result of his young appearance. To Kei's chagrin, his father also frequently tends to drag his son off to meetings, occasionally in foreign places. Satoru also possesses superb fighting skills and trained in his youth to be as strong as a pro-wrestler; he particularly enjoys Hikari's company because it means they can fight, which Kei usually prevents from happening.

He is a good friend of Hikari's father, whom he met through their mutual love of pro-wrestling. Before marrying Midori and into the Takishima family, his surname was Utagawa.