Special Ability Institute (特力研 Toku Ryoku Ken?, lit. "Special Power Laboratory") or Special Esper Institute, formally named as Special Esper Dual Modification Technology Research Institute (特例能力者多重調整技術研究所 Tokurei Nōryokusha Tajū Chōsei Gijutsu Kenkyūjo?) is a now-defunct research facility located in the 10th School District, specializing in the research of Dual Skill.