clover_knight_(vocaloid)
A song from the Vocaloid producer iyowa (igusuri please). It features Hatsune Miku on main vocals, with GUMI, Kaai Yuki, and flower all providing their voices as backup.
External links
* Youtube: くろうばあないと / いよわ feat. 初音ミク・flower・歌愛ユキ・GUMI