DEEP 125 Impact took place on May 5, 2025, at Korakuen Hall in Tokyo, Japan, promoted by DEEP. The main event features Ryuya Fukuda defending his Bantamweight Championship against Juntaro Ushiku in a five-round title bout. The co-main event showcases Yoichiro Sato defending his Welterweight Championship against Kohei Kadono, while featherweight Grand Prix semifinals include Yutaro Muramoto vs. Sho Sekihara and additional contenders. Other notable fights feature Saori Oshima vs. Yeji Lee in a women’s microweight clash and Yuto Muramoto vs. Sho Sekihara.