[1] Tashiro started his career at Hamamidaira JSC, and then went to Yokohama Junior SC.
[6] In December 2020, it was announced that Tashiro would be signing for J3 League team Roasso Kumamoto for the 2021 season and he was handed the number 1 shirt.
[8][9] He made his debut for the club in March 2022 and kept a clean sheet, in a 2–0 J2 League win over V-Varen Nagasaki.
[10] He only made 5 appearances across all competitions in the 2022 season, as he was unable to take the place of veteran first-choice goalkeeper Yuya Sato.
In December 2024, it was announced that Tashiro would be joining J1 League club Albirex Niigata for the 2025 season.