HK: Forbidden Super Hero is a Japanese action-comedy film based on Keishu Ando's manga of the same name. The movie follows the story of Kyosuke Shikijo, a high school student with an unusual fetish for female underwear. Despite this unusual habit, Kyosuke is a talented martial artist and a hero at heart, always ready to fight for justice.
One day, Kyosuke comes across the underwear of Aiko Himeno, a fellow high school student. When he wears her pink panties, he gains superhuman powers and transforms into the alter ego "Hentai Kamen." With his newfound abilities and perverted tactics, Hentai Kamen sets out to protect Aiko from a dirty and heinous teacher who has been harassing her.
As Kyosuke struggles to balance his secret life as a superhero with his regular high school life, he becomes embroiled in a series of increasingly ridiculous battles, fighting against a colorful cast of villains including a group of delinquents, a mad scientist, and even an army of robotic panty-snatchers.
Despite the film's outlandish premise, HK: Forbidden Super Hero is a surprisingly heartfelt and enjoyable movie, filled with over-the-top action scenes, hilarious comedy, and a charmingly earnest protagonist. With its combination of superhero spectacle and absurd humor, the film is a uniquely Japanese take on the classic comic book genre, and a must-see for fans of action-comedy films.