HK: Forbidden Superhero the Abnormal Crisis

Kyosuke is now a university student. He has been using his girlfriend, Aiko's, panties to transform, but she asks for them back, so he can quit his superhero escapades. With the death of Oogane Tamao, there is no need to be Hentai Kamen anymore. However, new trouble brews when girls' panties suddenly start disappearing all over Japan. Kyosuke struggles with his sense of justice to either stop the enemy or keep his promise to Aiko.
(Source: MDL)