The file is most likely a compressed archive containing the visual novel game "Erovoice! Sexy Voices Lead to a Successful Love Life♪" or its associated audio assets. Developed by CLOCKUP and published in English by MangaGamer, the game is an adult-oriented title centered around a protagonist who works at a voice acting recording studio. Archive Contents A typical .7z file for this game usually contains:
Folders containing scripts, CGs (images), and background music. Erovoice.7z
High-quality voice recordings, which are a primary feature of this specific game. The file is most likely a compressed archive