The official Twitter account for the Baby Steps television anime announced on Tuesday that Kentarou Itou and KENN will join the anime's cast. KENN will play Yoshiaki Ide, a tennis player from Saitama, and Itou will play Takayuki Okada, a tennis player who made it to the top four at the All-Japan Junior Indoor Selectionals in his second year of high school. Both characters will debut in episode 21 on Sunday.
The anime stars Taishi Murata as Eiichirō "Ei-chan" Maruo, a punctual and earnest boy who has strived for straight As since elementary school. The 15-year-old high school boy stops by a tennis school to deal with his lack of exercise. Minako Kotobuki will play Natsu Takasaki, a beautiful, earnest girl who Ei-chan meets Natsu at the tennis school and who only has passion for tennis, while Takuma Terashima and Daisuke Namikawa round out the main cast as Kojirō Kageyama and Takuma Egawa, respectively.
Pierrot (Naruto, Kingdom) is animating the television series in 25 episodes. Katsuki himself is collaborating on the creation of episodes with original stories not told in the manga. Kenji Saito (Dennō Coil, Bakuman., Bottom Biting Bug) is producing the anime for NHK.