Shōhei Sakaki is Ryo Mizushima's classmate and dedicated doubles badminton partner. He possesses dark brown hair, brown eyes, and a height of 179 cm. He typically wears a standard blue badminton outfit for matches and training.

As the eldest of four siblings, with one younger brother and two younger sisters, he exhibits a naturally caring and considerate nature, extending this supportive attitude to the badminton team. His parents operate the western-style restaurant Kaiseitei, both having played badminton in their youth.

Shōhei serves as the team's passionate mood-maker, uplifting spirits with his energetic presence. His badminton style is powerful and straightforward, mirroring his determined approach. Born on August 23, he is a Virgo with blood type O and enjoys sauna sessions.

His name reflects his character: "Shōhei" combines the characters for "soar/glide/fly" (翔) and "flat/broad/peaceful" (平), while his surname "Sakaki" (榊) refers to a sacred Shinto tree.