Happy World!

God distributed happiness and misfortune onto each human equally.

However, there is only one person in the world, who has only misfortune bestowed upon him, and that boy is the high school student Takeshi, cursed with bad luck ever since he was a child.

Luckily a beautiful angel named Elle is dispatched by God to make up for Takeshi's plight in life and to protect him from further misfortune.

At first, Takeshi is rather annoyed by Elle's presence, but after she saves his life, Takeshi accepts the angel's presence.

Elle then uses her angelic powers to become human and forthwith lives with Takeshi along with his stepmother, Sanae, and his stepsister, Motoko under the same roof.