Extreme Training Yuna Mitake May 2026

While most of Afterglow sleeps, Yuna is already lacing up her muddy running shoes. Her training doesn’t start in a soundproof studio—it starts on the steep, unforgiving slopes of Mount Asama’s back trails.

Carrying a 10kg weighted vest (a gift from her father, a former martial artist), Yuna sprints uphill for 90 minutes. The goal isn’t cardio; it’s diaphragmatic endurance. Each gasping breath on the thin, cold morning air forces her core to stabilize. She times her footfalls to the rhythm of screaming power chords in her head.

"If I can’t breathe here, I can’t hold a 15-second scream on stage." Extreme Training Yuna Mitake

Extreme physical loads are meaningless without an equally robust mental framework. Yuna practices “mind‑in‑motion”—a hybrid of mindfulness and kaizen (continuous improvement) that she describes as “seeing every footfall as a decision point.”

“When I’m at mile 80 of a 100‑km race, the pain is a signal, not a stop. I ask my brain: ‘What does this pain want me to do?’ The answer is usually to adjust my stride, breathe deeper, and keep moving,” Yuna says. While most of Afterglow sleeps, Yuna is already

Her daily meditation sessions are guided by a 10‑minute audio program co‑created with Dr. Matsui, which integrates:

The combination of physiological and psychological training has led Yuna to report a subjective fatigue rating 30 % lower than her peers during ultra‑distance events, despite logging 20 % higher training volume. "If I can’t breathe here, I can’t hold

What makes this piece compelling is the narrative subtext. Yuna is often the "support" character in the anime, battling her own insecurities. The "Extreme Training" theme serves as a visual manifestation of her character arc—overcoming weakness through effort.