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 is a play on the word , meaning "". 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.
The promotion was founded by Eiji Sahara, who was a member of the student wrestling club called Osaka Wrestling Federation (OWF) in Osaka Gakuin University, under the ring name Ecchan. Throughout 2009, Sahara organized a dozen wrestling events with his classmates in a makeshift ring set up in Triangle Park, in Amerikamura, Osaka. The following year, the promotion was officially founded and, on February 20, a pre-launch event titled "à(forte)" was held at the Nipponbashi 4-chà Âme Theatre. On March 6, a second pre-launch event titled "ÃÂà(fortissimo)" was held in Triangle Park; then, on March 21, the official launching event titled "ÃÂÃÂà(fortississimo)" was held at the Black Chamber in the .
On February 21, 2015, the promotion held its 5th anniversary event at the Osaka Prefectural Gymnasium.
On September 15, 2018, and March 31, 2019, the promotion took part in two of Keiji Muto's events, held respectively in Kashihara, Nara and Hanyà «, Saitama.
On February 9, 2019, the promotion held its first event in Tokyo, at Shin-Kiba 1st Ring.
On March 22, 2020, Shi-En held its 10th anniversary event at .
Shi-En currently has four titles. The three main titles are the Pro-Wrestling Shi-En Singles, Tag Team and 6-Man Tag Team Championships. The "I Love Shi-En" Championship is a secondary title.
The is a professional wrestling championship created and promoted by Pro-Wrestling Shi-En. It is the top title of the company and has been held by a total of seven champions in ten different recognized reigns. The current champion is Bomber Okuno who is in his first reign.
The is a professional wrestling championship created and promoted by Pro-Wrestling Shi-En. It is a secondary title of the company that has been held by a total of 10 champions in 15 different recognized reigns. Anyone can challenge for the title and the reigning champion chooses the stipulation of the matches. The current champion is Maro Kuriyama who is in his first reign.
The is a professional wrestling tag team championship created and promoted by Pro-Wrestling Shi-En. There have been a total of 21 reigns shared between 20 wrestlers. The current champions are Hiroto Okubo and Tetsuya Goto who are in their first reign as a team, but are in their third and second reigns individually.
The is a professional wrestling tag team championship created and promoted by Pro-Wrestling Shi-En. It is contested for by teams of three wrestlers. There have been a total of 10 reigns shared between 18 wrestlers. The current champions are Tiger Heart, Yosuke Takii and Yuko Kawabata, who are in their first reign as a team.