Seibu Lions announced that they will hold the "The Lions Summer Festival 2026 supported by Suntory," which will be free to enter, on July 18th and 19th.

This event is in its fifth year. On the special stage, Tetsu and Tomo and Cool Poco. will perform on the 18th, and on the following day, the 19th, Cool Poco. and Kaminari will fill the stadium with laughter. The traditional Yosakoi dance performance will also be held.

The annual popular festival will feature around 10 stalls. In addition, visitors can enjoy The Lions themed gourmet food and food stalls exclusive to this event. The grand finale on both days will be the first-ever "LIONS BON-DANCE SHOW," a new kind of Bon Odori dance where attendees can participate. In addition to the team's official performers, Leo, Raina, and bluelegends, a guest DJ will appear and dance along to conclude the festival.