Official Number

Yakousei is an eclectic, internet-native strain of J‑Pop that coalesced in the late 2010s. It blends Vocaloid-informed songwriting with indie pop sensibilities, bright electropop textures, and danceable, club‑ready grooves. Lyrically, the style leans inward: songs often explore sleepless nights, urban solitude, and coming‑of‑age anxieties, pairing intimate narratives with big, melodic hooks. Production favors glossy synths, clean guitars, and tightly programmed drums, while vocals—human or software‑assisted—trace agile, hook‑dense lines that feel both nostalgic and contemporary.

Utaite refers to amateur and semi‑professional online singers who post cover versions of songs—especially Vocaloid, anime, and contemporary J‑Pop/J‑Rock—usually under a pseudonym. The Japanese term literally means “singer,” but within online culture it specifically denotes cover artists active on platforms such as Niconico (Nico Nico Douga) and YouTube. Utaite typically collaborate with a small creative circle (arrangers/producers, “mixers,” video editors, and illustrators) to re‑imagine existing songs with new keys, fresh arrangements, stacked harmonies, and distinctive vocal color. The scene is closely tied to otaku and dōjin communities and thrives on anonymity, fan feedback, frequent uploads, and highly stylized online personas.