“Butterfly Effect = When a very small event ultimately leads to a major, completely unexpected outcome.”
From a small subculture to a massive movement that shakes the world—
“Butterfly Effect,” the crazy bass music party that shatters stereotypes.

This time, the headliner is Subtronics—the monster producer reigning at the pinnacle of the modern bass music scene—making a powerful comeback.
Following his appearance at “Ultra Japan” in 2024 and his previous performance that sent the sold-out Z HALL into a frenzy in 2025, he’s officially returning to Japan for the second consecutive year!!

His achievements over the past year have been nothing short of spectacular.
He made history by headlining “Insomniac x Tomorrowland: UNITY Finale” at the Sphere, Las Vegas’ next-generation spherical arena, and after performing at prestigious festivals like Coachella, Lost Lands, EDC, and ULTRA—where he has truly become a legend—he is descending upon us once again!!

With his unique artistic vision, mind-shaking, heavy-hitting dubstep, and twisted sounds, along with technical mixes that are unpredictable from start to finish, he’s got dance floors around the world hooked!!
Burn his performance—one you might never see on a club scale again—into your memory!!

The local lineup features “Dubscribe”—who have been recognized by world-class artists and made a splash with their deep bass sound that transcended the boundaries of idol music on “VEIL,” a track by Misuzu Hataya from the media mix series *Gakuen Idol Master*, and who have also performed at “Lost Lands,” one of North America’s largest dubstep festivals—as well as “HEAVEN’S GATE CREW,” who are set to appear at ULTRA JAPAN 2026 “WATARU,” and other distinctive local acts are on the lineup!!

The current state of bass music will resonate throughout Kabukichō.