After graduating, Takahashi turned professional and made his mixed martial arts debut at Pancrase on April 24, 2016, winning by unanimous decision.
[1] On June 29, 2019, Takahashi faced Yuya Shibata for the DEEP interim flyweight championship match.
He won the bout by unanimous decision to win the interim title and become the youngest champion in DEEP history at the age of 18.
[16] Takahashi faced Lee Jung-hyun at Rizin 46 on April 29, 2024, submitting him via arm-triangle choke at the end of the first round.
[17] Takahashi faced Hiromasa Ougikubo on July 28, 2024 at Super Rizin 3, and lost the bout via unanimous decision.