Yuto Nakashima is a Japanese professional wrestler and former mixed martial artist who entered New Japan Pro-Wrestling as a Young Lion in 2021. Following a European excursion in 2024 with Oskar Leube, he reemerged in Japan on August 17, 2025 under the name Yuto-Ice, aligning with OSKAR in Bullet Club War Dogs as The Knockout Brothers, a pairing that went on to win the IWGP Tag Team Championships within months. Following the dissolution of Bullet Club in January 2026, Nakashima and OSKAR joined the Unbound Co. faction.