Title Recommendations based on Dorothy Gale

Free! revolves around Haruka Nanase, a student at Iwatobi High School. It's not a bad school per se, but Haruka is kind of upset that the swimming pool is so unfit to swim it. When his friend Nagisa arrives at Iwatobi and decides to create a swim team, Haruka's roped in by the promise of a place to swim, but he's less enthused about the idea of swimming as a team.

Saitama is a hero who only became a hero for fun. After three years of special training, though, he's become so strong that he's practically invincible. In fact, he's too strong. Even his mightiest opponents are taken out with a single punch, and it turns out that being devastatingly powerful is actually kind of a bore. With his passion for being a hero lost along with his hair, yet still faced with new enemies every day, how much longer can he keep it going?