Happiness!: Watarase Jun no Kareinaru Ichinichi
Japanese title: はぴねす! 渡良瀬準の華麗なる一日
Type: OVA
Episodes: 1
Source: Visual novel
Genres: Comedy, Fantasy
Studios: Artland
Duration: 23 min
Rating: PG-13 - Teens 13 or older

With the help of the combination of many different magic, Jun gets turned into an actual girl.