The 2004 single "Wonderstory/Happy End" presents a dance-pop double A-side from Ryōko Shintani. Both tracks showcase her energetic vocal delivery over polished, uptempo production typical of the era.
- "Wonderstory" was used as the opening theme for the anime series *Magical Girl Lyrical Nanoha*. The single reached number 25 on the Oricon weekly charts. "Happy End" served as the ending theme for the same series.
- The single was released on November 26, 2004, by Lantis.
- The *Magical Girl Lyrical Nanoha* franchise was a commercial success, boosting the profile of its associated music.
Shintani Ryōko is a Japanese pop singer and voice actress. She was a prominent artist on the Lantis label during the early 2000s.
Tracklist
