Hacka Doll The Animation ED Single Hacka Doll The Animation ED Single - Happy Days Refrain ♫ MP3 ♬ Details Close × Details Album name Hacka Doll The Animation ED Single - Happy Days Refrain Number of Files 4 Total Filesize 30.24 MB Total Duration 13m 13s 💿 Happy Days Refrain Solidfiles pCloud 💿 Cabbage Kentei Solidfiles pCloud 💿 Happy Days Refrain (Instrumental) Solidfiles pCloud 💿 Cabbage Kentei (nstrumental) Solidfiles pCloud