- Niji (虹)
- Catalog Number
"Niji" is the second single released by Quruli. The title song was originally track #4 on their first demo Quruli no Ichikaiten, which was re-recorded and placed as track #2 on their debut album Moshi Moshi a year later. The titular track was also used as a theme song for TVK's TV show Mutoma JAPAN. The single reached #56 on the Oricon chart, where it charted for a week.