[1] Having joined Cerezo Osaka, he was registered as a type 2 player in October 2020, making him eligible to represent the club in the J.League.
[3] Having joined the high school squad on 7 March, he immediately established himself in the team, featuring at the Funabashi Invitational under-18 Tournament in the same month.
[6] Ahead of the 2022 All Japan High School Soccer Tournament the next year, it was announced that Obuchi would join J2 League side V-Varen Nagasaki in 2023, following his graduation.
[7][8] Having joined V-Varen Nagasaki in early 2023, Obuchi struggled to establish himself in the team, and by June he had only featured briefly in the Emperor's Cup.
[9] In January 2024, he joined J3 League side Tegevajaro Miyazaki on a season-long loan.