Season 1

Takeru and Hikari explain to his friends and family what happened the previous night. Hikari tells them she came to Earth from outer space because she was lonely, but doesn't know anything else about herself. However, because Takeru saved her he's now very precious to her. Takeru's male classmates go wild with jealousy because he's got a cute babe now.

Hikaru thinks it will be enjoyable to go to school with Takeru so she begins school with him. Soon she finds out that it is really boring.