Happy World! - S01

Oomura Takeshi is one unlucky guy. He has had bad luck ever since he was little. One day, while dealing with his usual run of bad luck, he meets an angel named Elle, and he learns that his father wished the curse of bad luck on him. Takeshi has the chance to pass the curse on, but he accepts it to save a young girl. For his noble act, Elle becomes human and lives with Takeshi to protect him from the curse, which is something Takeshi isn't especially happy about.