
Under the blazing midsummer sun, tens of thousands of young people, drenched in sweat, raised their fists in the air. From a slightly elevated vantage point, Hachimine watched the scene with a cool, composed expression. He was sitting in a box seat with his friends from Ginza. He exuded a sense of ease, as if to say, “The best way to enjoy a festival is with elegance.” But did he manage to maintain that composure until the very end?
Summer Sonic — Japan’s Largest Urban Music Festival Celebrates Its 25th Anniversary

Summer Sonic is one of Japan’s largest urban music festivals, held simultaneously every summer at two venues in Tokyo and Osaka. Affectionately known as “Samasoni,” it brings together major artists from Japan and abroad. The year 2026 marked its 25th anniversary. The festival was expanded from its usual two days to three, taking place from August 14 to 16. The Tokyo venues were ZOZO Marine Stadium and Makuhari Messe.
While Fuji Rock is known for its camping experience deep in the mountains of Niigata, Summer Sonic is characterized as an “urban” festival that’s accessible by train and can even be enjoyed as a day trip. It tends to feature many hot international artists. Hachimine attended on the first day, Friday, August 14. The headliners at the Tokyo venue that day included THE STROKES—whose return to Japan after a 25-year hiatus generated a lot of buzz—along with a stellar lineup featuring BUMP OF CHICKEN and JENNIE.
Box Seats: The Adult's Choice

This time, the group led by Hachimine secured “box seats” inside ZOZO Marine Stadium. Located in the upper deck, these designated seating areas—each accommodating up to five people—allow friends to relax comfortably while gathered around a table. They are premium seats that offer an unobstructed view of the stage without having to jostle through the crowd.
"Festivals are all about physical stamina, right? Well, in that case, I'll use my head instead."
Saying that, Hachimine took his seat in the box section with a calm expression. Having spent 20 years in Ginza, he knew better than anyone that comfort and a pleasant atmosphere were worth paying for. Ignoring the young people jostling in the standing area, he relaxed in his own private space a short distance away. At first, this choice seemed like an absolute win.

Even artists I don't know are, for some reason, fun.
To be honest, Hachimine didn't know most of the performing artists. He had only heard the names of a handful of headliners. For the rest, he watched the ever-changing lineup on stage, relying solely on the information that they were "apparently popular with young people."
But, strangely enough, it’s fun. Even with a band I’ve never heard of, when tens of thousands of people are going wild right in front of me, that excitement rubs off on me too. Without even knowing whose song it is, I find myself swaying to the beat before I realize it. Is it the power of music, or the magic of the festival? Hachimine, who had been sitting in the box seats with his arms crossed, nodding and saying, “I see,” had, before I knew it, leaned forward into the action.
I was supposed to watch it with a cool head, but in the end...
Then the sun set, and it was finally time for the headliner to take the stage. The energy throughout the venue skyrocketed all at once. The cheers were like an earth-shaking roar, countless arms were waving, and the massive sing-along showed no signs of stopping.
By this point, my original plan to “watch the game elegantly” had completely vanished. Hachimine leaned out of his box seat and shouted along with his friends. Gone was his cool demeanor—sweating profusely, he had become a full-fledged part of the frenzy. In the end, whether you’re watching from a good seat or standing in the crowd, when a festival sweeps you up, it sweeps you up.
Even if someone had called out, “Weren’t you supposed to watch this gracefully?” he probably wouldn’t have heard them anymore.
Summary
The frenzy under the blazing sun, the special atmosphere of the 25th anniversary, and the freshness of seeing so many unfamiliar artists—for Hachimine, it was all incredibly exhilarating. He’d thought he’d chosen a comfortable box seat, but by the end, he was drenched in sweat. In the end, the one who enjoyed it the most might have been Hachimine himself, who’d intended to stay cool and collected. Even an adult’s composure melts away in the face of a real live performance. Being swept away by the sounds of a summer night is never a bad thing, no matter how old you are.