Krush 171 live from Korakuen Hall in Tokyo, Japan. The event features a one-night lightweight grand prix.

The main event bout between Takeru Segawa and Leona Pettas for the K-1 Super Featherweight Championship will serve as the headliner. The heavyweight bout between Kyotaro and Kosuke Jitsutaka was likewise rescheduled. The fight between the former K-1 Lightweight champion Rukiya Anpo and Kaito was scrapped, as Anpo was forced to withdraw due to injury. Yodkhunpon Sitmonchai, Dansiam AyothayaFightGym, Kamlaiphet Pran26 and Petchseenil Sor Puangthong will all be unable to compete due to travel restrictions caused by the COVID-19 pandemic. TETSU versus Tomoya Yokoyama, MIO versus Mako Yamada, Akihiro Kaneko versus Momotaro Kiyama and Hiroki versus Ryuka were all rescheduled for this event as well.

Krush 173 event took place on April 29, 2025, at Korakuen Hall in Bunkyo, Tokyo, Japan, promoted by K-1 Japan Group. This kickboxing showcase features Kenshin Kodama facing Kuto Ueno in a super featherweight (-60kg) main event. The co-main event pits Takahito Niimi against K. Sekiguchi in a flyweight (-57.5kg) bout. Other notable fights include T. Tsukamoto vs. Hiroto Iwasaki, Kenta Tagami vs. Masaki Oishi, and Yuya Hayashi vs. Eruto, spanning 12 bouts across various weight classes.

RIZIN 53 was a mixed martial arts event that took place on May 10th, 2026 at the GLION ARENA KOBE in Kobe, Japan.