Season 0 of To Be Hero premiered on June 16, 2018.

Season 1 of To Be Hero premiered on October 5, 2016.

The protagonist, known only as "Ossan" (pops), is a handsome yet undisciplined man, a divorced father who has a job as a toilet seat designer. He lives with his daughter Min-chan, who excels in both academics and sports. One day, while on the toilet, Ossan is sucked into it and becomes a hero charged with protecting the world. In exchange, he transforms from his handsome form into a chubby appearance. Ossan's fight to save the world and protect Min-chan begins here.

Season 2 of To Be Hero premiered on April 14, 2018.

Everyone around Huayu Ye (花语叶) expects her to grow up and become an adult, and she's lost the ability to keep herself mentally balanced. At the bottom of her heart, her childish self is still there, and still strong. One day she wanders into another dimension, a world where the light has been lost, and darkness rules. The people there exist as babies wearing only their underpants. The clothes they wear can be summoned as powerful fighters called "Spiclo" (Spirit Cloth). In this world, a battle was being fought between light and darkness... However, this battle between light and darkness in another dimension was actually the battle between hope and despair in Huayu Ye's heart...

Season 3 of To Be Hero premiered on April 6, 2025.

In a world of brilliant heroes, it's the trust of their fans that makes them into superheroes. If the people believe that a man can fly, he will fly. If a hero loses the people's trust, he loses his special abilities.

Trust Value is collected and quantified and used to determine a hero's ranking. Every two years, a tournament is held to choose the top heroes. Their performance in the tournament determines their new Trust Values and their rankings.

The absolute hero with the highest ranking... His name is X.