Tomoka Kase (加瀬 友香 Kase Tomoka) is a character from Kase-san.
She is a boyish looking girl who is part of her school's track and field club and has exceedingly good athletic skill, often racing in tournaments. She takes an interest in Yamada and soon starts dating her, although she can sometimes act a little perverted. After graduating from high school, she goes to a sport university in Tokyo.