Ema Sawaguchi

Ema Sawaguchi (沢口 慧眞 Sawaguchi Ema) is a medical student and the older brother of Rihito Sawaguchi who has rather poor luck with women that he tends to try to be flirtatious with the girls around him, but he appears to have had little luck.

Trivia

 * Ema's surname Sawaguchi means "swamp, marsh" (沢) (sawa) and "mouth, entrance" (口) (kuchi/guchi).