空中庭園 (Kuuchuu Teien)

Background
"Kuuchuu Teien" is an original song composed by Ahirugunsou-P featuring Kagamine Rin and Kagamine Len. This song is featured in the albums Ahiru Hospital (アヒルホスピタル) and Boku no Mote Kyoku (Tōsha-hi) (ぼくのモテ曲（当社比）). It has entered the Hall of Fame.