Please Let Us Be Idols!
A certain idol agency's producer grabbed too many jobs which overlapped at the same time. With the front that they are trying to improve his efficiency to advance his career, the HACKADOLLs aim to debut as idols on stage at an event held in an underground theater.
Aired 09/10/2015EP 2 - Please Let Us Be Idols!

2015
Hackadoll the Animation
The anime personifies the Hacka Doll app's customization engine as three "Hacka Dolls" — the personal entertainment AI and main navigator Hacka Doll #1, the anime expert Hacka Doll #2, and the knowledgeable otaku Hacka Doll #3.
(Source: Anime News Network)