Hacka Doll (ハッカドール)
Touch Tap Baby
Release date: November 25, 2015
01 Touch Tap Baby
02 First Heart Beat
03 Touch Tap Baby (instrumental)
04 First Heart Beat (instrumental)
Happy Days Refrain
Release date: November 25, 2015
01 Happy Days Refrain
02 KYABETSU kentei
03 Happy Days Refrain (instrumental)
04 KYABETSU kentei (instrumental)
Hacka Doll = Takagi Miyu, Okuno Kaya & Yamashita Nanami