Rose of the Ring

(from ebookjapan):

Hanako is a slightly overweight but warm 15-year-old girl. Her debut in women's professional wrestling was as a Heel wrestler.

She spends six months of the year traveling, and when she returns to Tokyo, she is relieved to find that the newcomers have returned to their dormitories and the older wrestlers have returned to their apartments or homes, enjoying their short-lived freedom as wrestlers.

Hanako aims to be the best in the world with a pure spirit, but she will always remain a Heel. When will she become a star?