Ai Ai Gasa, is the new single of Tegomass. Literally Ai ai gasa (???) means to share an umbrella, however, it could also be read as "Love-Love Umbrella", as the word for love (?) is also pronounced ai. As such, sharing an umbrella as a couple in Japan is considered a romantic expression, and teens often draw an umbrella with their name and the name of their crush, the way one would in a heart. In Tegomass's video, the two are creating rain to force a young boy and girl to walk under an umbrella together.

Aiaigasa is certified Gold by RIAJ for shipment of 100,000 copies .

Limited edition Tracklist:

1. Ai ai gasa
2. Bokura no Uta
3. Moshi mo Boku ga Pochi Dattara?

DVD Tracklist

1. Ai ai gasa (PV)
2. Ai ai gasa (Making)

Regular edition Tracklist:

1. Ai ai gasa
2. Bokura no Uta
3. Moshi mo Boku ga Pochi Dattara?
4. Boku no Cinderella
5. Ai ai gasa (Original Karaoke)