In 663, OTOMOBE no Hakama sold himself and became a slave in Tang China for making money to let the other Japanese prisoners including Ganpo's son escape, and thus Ganpo's son, HAJI no (Muraji) Hodo, HI no (Muraji) Oyu, and TSUKUSHI no (Kimi) Satsuyama bought clothes and food, returning to Japan and reporting to the emperor that Tang was planning to invade Japan.
天智天皇2年（663年）、大伴部博麻が身を売って得た衣糧を得て、土師（連）富杼、氷（連）老、筑紫（君）薩夜麻とともに帰国し、唐の計略を本国に知らせた。