MEHMOLD EYM’s Kids Winter Camp runs four weeks over February (2/2–2/6, 2/9–2/13, 2/16–2/20, 2/23–2/27), Monday–Friday with half-day (9am–12pm or 1pm–4pm) and full-day (9am–4pm with lunch) options. Designed for ages 6–16, the curriculum mixes Brazilian Jiu-Jitsu, kickboxing, flexibility/mobility work, and strength & conditioning in small groups (4–10 kids). A one-week full-day camp is ¥4,500 (early bird ¥4,150 until 1/25), and organisers encourage contacting them for more options or to book a trial class.