The player is Tarou Yamada, an ordinary boy from the Yamada family that just moved to the Koja Town. The Yamadas made a party to celebrate the move and meet the residents, but during the party, the food was almost ending. Tarou asked for more food from a delivery named Service Cafe (Seca for short), but he received a cosplay costume instead. Thinking of using it to boost the party by making a hero show with his father, who was dressed as a monster, he wore the costume and discovered that it gave him powers, accidentally throwing his father far away with a light tap. Checking it, he discovers that it is the top work from Seca, a sturdy and powerful super energy combat armor that can make anyone a hero, but it requires batteries to work. Also, as it is a rental suit, Tarou decides to start a rental job under the name Rent a Hero, and distributes flyers around the town to take requests. The money he gains is used for the costume's monthly rental fee and for batteries. After finishing the distribution and returning home to play on his creamcast (the game's save point), he went out to check the town and saw a man harassing a woman, entering in a fight against him. Although helping outside the shop requests won't give rewards, it rises awareness of the hero, improving his career. Tarou then gradually gains experience and becomes a famous hero.