Koi wa Kamen no Uchigawa ni

Mizuki Tsuyoshi is a big fan of superheroes - so much that he decides to right any wrongs that he sees! Unfortunately, this gets him labelled as a delinquent. Meanwhile, in a nearby amusement park, he meets his ideal suit actor and attempts to befriend him, but...

From Hoshikuzuu Scans:
Zoukiya is a true hero show fan at heart. Wanting to be on the side of justice, he tries to correct those who have strayed from the path of the righteous. But somewhere along the way, the people have written him off as a gangster. But when this is all happening, he happens to meet a suited up part-time actor at a nearby amusement park, who is his ideal type of hero. So he wants to befriend this mysterious man, but...!