Kawase participated in the 1st grade summer 95th Japanese High School Baseball Championship with Shunsuke Kasaya and Masato Morishita at the Ōita Prefectural Ōita Commercial High School.

[1] He had a rivalry with Morishita, who competed for pitcher and shortstop positions in high school.

[7] September 20, 2021, he was named a starter against the Tohoku Rakuten Golden Eagles and recorded three hits.

[9] On July 18, 2022, Kawase would record a two-run double against the Chiba Lotte Marines.

[11] On September 12 against the Saitama Seibu Lions he started the seventh inning on defense and recorded a two-run double.