Yohei Sasamori is a Japanese voice actor born on October 27 and affiliated with the talent agency Aptepro. He is a native of Iwate Prefecture and a graduate of the agency's 14th training school. His skills and hobbies include anime appreciation, karaoke, board games, reciting Ghibli films, badminton, and speaking the Hanamaki dialect.

Sasamori's most prominent role is in the High School! Kimengumi franchise. He voiced the character Rai Kanecho in the original 1985 anime series. Decades later, he was cast in the 2026 anime remake of High School! Kimengumi, where he plays the role of Torio Tanokin. In this new adaptation, Torio Tanokin is a member of a handsome all-boy gang named Irootokogumi, alongside characters voiced by fellow cast members Hayato Yamamoto, Ayato Morinaga, and Hiroki Nishimiya. The remake premiered in January 2026.

Beyond the High School! Kimengumi series, other anime voice roles for Sasamori include a noble in Zutaboro Reijou wa Ane no Moto Konyakusha ni Dekiai sareru, a classmate in Shomin Sample, and an audience member in Sasayaku You ni Koi wo Utau. He has also provided voices for video games, with a role as a senior trainer in Pokemon Frenda, and has performed in stage productions such as float the box -the Last Supper-.