Niko × Niko = Hyper Smile Power! / Hello, Happy World! / にこ×にこ=ハイパースマイルパワー! / ハロー、ハッピーワールド! / Niko × Niko = Hyper Smile Power! / Hello, Happy World!

Hello, Happy World! is Kokoro Tsurumaki (CAST: Miku Ito), Kaoru Seta (CAST: Azusa Tadokoro), Hagumi Kitazawa (CAST: Yuuri Yoshida), Kanon Matsubara (CAST: Moe Toyota), Michelle (CAST: Tomoyo Kurosawa)

M-01
Composer: Ryota Tomaru (Elements Garden)
Arranger: Ryota Tomaru (Elements Garden)
Lyricist: Asuka Oda (Elements Garden)

M-02
Composer: Yuta Kasai (Elements Garden)
Arranger: Yuta Kasai (Elements Garden)
Lyricist: Asuka Oda (Elements Garden)