Radiance is an instrumental electronic track from Nhato (Tatsuya Fukumuro), a Japanese composer-producer whose melodic-house and trance productions have appeared across Bemani titles, Sega's arcade rhythm games, and the indie mobile scene. The song first arrived in ONGEKI SUMMER on February 6, 2020 as part of Chapter 3-2 "ぷれぜんと・ふぉー・ゆー," before expanding into CHUNITHM NEW in November 2021 and later reaching maimai DX PRiSM on February 7, 2025. In maimai, Radiance sits under the ONGEKI & CHUNITHM genre banner, the in-game category that collects crossover songs spanning Sega's three arcade rhythm-game families. It was initially available as a time-limited unlock through オンゲキちほー8 (ONGEKI Area 8), requiring 420 km of cumulative distance during the event window. Beyond Sega's ecosystem, the track has also been licensed for Phigros and DJMAX RESPECT V through their respective ONGEKI collaborations, making it one of the most widely circulated crossovers in Nhato's rhythm-game catalog. The Master chart, designed by サファ太 (Safata) at a 13.7 difficulty constant, is the primary draw for high-level players, while the Expert chart by はっぴー (Happy) provides a mid-tier challenge at 10.6.