Beautiful Future is an original instrumental production by PSYQUI (サイキ), a Japanese future bass and future core trackmaker signed to the MEGAREX label. The track premiered in maimai DX Splash on October 16, 2020, as part of the Metropolis Area 3 unlockable series, where players could access it by accumulating 420 kilometers of travel distance. Its in-game flavor text sets the scene within the Metropolis narrative: an emergency defense mode is declared, the central maincore's energy swells and turns white, barriers materialize around the castle walls, and two defense units, named "雷天" (Raiden) and "焔天" (Enten), activate in the keep's hangar. Musically, Beautiful Voice embodies PSYQUI's signature bright-and-bouncy aesthetic: crisp synth melodies, driving 172 BPM percussion, and lush future bass textures with no vocal element. The song's background movie was created by 群青リコリス (Gunjou licorice). The Expert chart, designed by はっぴー (Happy), and the demanding Master chart (level 13+, constant 13.7) by 隅田川星人 (Sumidagawa Seijin) offer contrasting takes on the same energetic track. Beyond maimai, Beautiful Future crossed over to CHUNITHM LUMINOUS in June 2024, broadening its audience in the rhythm game scene.