HK: Forbidden Super Hero

Kyosuke Shikijo is a reluctant student with a strong sense of justice who wants to be stronger. He signs up for the martial arts club to prove himself and protect others. This decision marks the start of his journey toward becoming the superhero Hentai Kamen.

Aiko Himeno is the new girl in Kyosuke's class and also takes on the role of manager for the martial arts club. Her arrival brings a new dynamic to the group and a crush forms in Kyosuke's heart. The stage is set for romance and competition.

During a bank hostage situation, Kyosuke sneaks in to intervene, risking himself to stop the robbers. He aims to blend in with the criminals, but an accidental wardrobe mishap transforms him into Hentai Kamen. The moment showcases his unconventional courage and willingness to protect others.

Hentai Kamen thwarts criminals with unorthodox methods, instantly earning the admiration of the city and of Aiko. Citizens are amused by his bizarre superhero persona while police and victims look on. The vigilante status begins to elevate Kyosuke's confidence.

A group of thugs from a nearby school schemes to take over the campus, believing there is hidden treasure beneath the grounds. Tamao Ogane orchestrates the takeover and secures control by buying the school property. The threat shifts from street crime to organized campus domination.

After his humiliating defeat, the thugs escalate by dispatching assassins to remove HK from the scene. The lineup includes a robot enforcer representing the school's code of conduct, Jiro Sato, who enforces rules with ruthless efficiency. Kyosuke must face these relentless attacks while maintaining his persona.

The final assassin arrives in disguise as a new school teacher, Bizarro Hentai Kamen. This twisted counterpart magnifies the threat and ruins HK's reputation by exposing him to the public in a negative light. Kyosuke's confidence starts to crack as the threat grows.

Kyosuke realizes that Bizarro HK's perversity surpasses his own, shaking his belief in his abilities. He begins to doubt whether he can protect those he cares about and doubts the hero's purpose. The seed of doubt leads him to rethink his path as Hentai Kamen.

Tamao seizes control of the martial arts club and traps Kyosuke, attempting to shoot him. The moment pushes Kyosuke to the brink and forces him to dig deep for a comeback. His resolve begins to rekindle as he fights to survive.

In a surge of determination, Kyosuke recalls his late father and finds a second wind. He undergoes another transformation, reaffirming his powers as Hentai Kamen. The renewed vigor sets up the final confrontation.

Hentai Kamen defeats Tamao, reclaiming control of the campus and proving his renewed strength. The battle resets the balance of power and signals the approaching showdown with Bizarro HK. The hero consolidates his victory before the ultimate fight.

The final duel pits HK against his darker self, Bizarro HK, in a battle that tests both identity and resolve. HK emerges victorious, but his mask is damaged enough to reveal his face to onlookers. The line between hero and parody blurs as the city watches.

Aiko finally discovers that Kyosuke is the vigilante Hentai Kamen. The revelation complicates their relationship as trust and romance collide with danger and heroism. The city learns that their new hero has a very human face.

Tamao bursts onto the scene with a giant robot, threatening the school and city. Kyosuke borrows Aiko's panties to fuel his disguise, transforming and delivering a decisive kick to the robot's crotch. The robot explodes, ending Tamao's menace.