Also known as
- Romaji
- Happiness!: Watarase Jun no Kareinaru Ichinichi
- Japanese
- はぴねす! 渡良瀬準の華麗なる一日
- Synonyms
- Happiness! De:Lucks: Watarase Jun no Karei Naru IchinichiHappiness! Jun Watarase's Magnificent DayHappiness! Jun Watarase’s Magnificent DayHappiness! OVAHappiness! The Brilliant Day of Jun Watarase