19, also known as Jūku, is a Japanese pop/folk duo consisting of Kenji Okahira
and Keigo Iwase. The group debuted in 1998 with their first single "あの青をこえて"
("Ano Ao wo Koete"), quickly gaining traction in the music scene, releasing
several top-ten albums and singles on the Oricon charts. Their debut album
Ongaku was released in July 1999, followed by 無限大 (Mugendai) in July 2000. The
duo continued to release successful singles such as "水・陸・そら、無限大" ("Sui Riku
Sora, Mugendai") and "足跡" ("Ashiato"), which reached number 2 on the Oricon
charts. Their album up to you, released in Septe...