Japan's major-winning tennis player Naomi Osaka has welcomed a new manga comic-book series where she will star as a cartoon character in a magazine aimed at teenage girls. "Unrivaled Naomi Tenka-ichi", which will run in "Nakayosi" magazine from late December, was produced with the help of Osaka's older sister, Mari. "Tenka-ichi" means "world number one" in Japanese.

"Growing up reading manga/watching anime was something that bonded me and my sister immensely so this is really exciting for both of us," the three-time Grand Slam champion tweeted Sunday. The new character, which depicts a doe-eyed Osaka with pink and purple hair and wearing a yellow visor, follows a storm of controversy over a sponsor's cartoon image of her last year.