Pro-Wrestling Shi-En is an Osaka-based Japanese professional wrestling promotion founded in 2010 by Eiji Sahara, better known by the ring name Kiai-ryuken Ecchan, with the goal of filling-in the spot left by the closure of Hustle. The name Shi-En is a play on the word shien (支援), meaning "support". The mottoes of the promotion are "Energize Osaka" and "Bring life back to pro-wrestling". In addition to monthly paid shows, the organization holds many free shows in a special outdoor ring at Uehonmachi Hi-Hi Town, next to the Uehonmachi Station.