[2025–2026] The Complete Tokai Summer Festival Guide: Enjoy a Celebration of Music and Emotion!

RAD JAM is one of the largest idol festivals in the Tokai region. To further energize the idol culture that’s drawing attention from around the world and to give people more chances to discover new music, the event is remarkably free to attend. You’ll be amazed that such a lineup and programming are offered at no cost, and with thorough infection-control measures in place, you can enjoy it with peace of mind. It’s an event that creates new encounters from the stage—for both idols and attendees alike.

This is an outdoor festival hosted by the four-piece melodic band, 04 Limited Sazabys. The venue, Moricoro Park, features a grassy lawn and offers a very pleasant atmosphere. As one of the first spring festivals, be sure to go check out YON FES!

This is a music event organized by the female-vocal band IRabBits, bringing together girl bands. It was held from 2009 to 2014, and will be revived in 2023. With more artists now active in girl bands than before, it’s rare to get a chance to see so many high-energy bands all at once. There will also be collaboration projects with female idol groups, so it’s shaping up to be a hot event. I’m excited to see what kind of performances they’ll deliver.