A team of four brave women -- Fighter (also the daughter of a legendary warrior who saved the country in the past), Paladin, Mage, and Darkelf -- accept the quest of saving the world from destruction. In order to achieve the goal they have to barter with villagers and fight against numerous monsters in their sexy and scantily-clad bikinis.
Hacka Doll app delivers a customized feed of news for each user. The user answers some simple questions when launching the app for the first time, and then the app will filter the news that caters to the user's personal interests. With daily use, the app automatically analyzes and learns which news articles the user reads and recommends to further personalize the feed. The anime personifies the 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.
At first glance, Arashi Mikami appears to be a normal, albeit socially awkward, 17-year-old high school student. He's actually part of a secret vigilante organization known as Black Label, a group dedicated to executing power-hungry criminals the law refuses to deal with. However, taking down a crime lord isn't always an easy task, and there are bound to be consequences for any action...
This is the action-packed story of the trials of Arashi and the people close to him.