Hiketsu

Hiketsu (否決, lit. "Negation") is a small, misterious organization composed of Plus with strange abilities, operating in a secret location, hidden and protected by a seal in a district of Rukongai.

Overview
As an organization, their goals are unknown. The only thing cleared is that all of the members are Nai, a rare sub-species of Plus, capable of manipulating freely the space-time continuum.

While unknown what the organization's main purpose is, it is rumored that its members connected and associeated between themselves to preserve the last members of the race.

Headquarters
Kept hidden by a barrier, Hiketsu's headquarters are located in the West Rukongai's district Takeba (竹葉, lit. "Bamboo Leaf"). It's a regular house, with two floors, and a big basement with strange artifacts.