Azusa only appears in OVA episode 13 and briefly in two episodes of Tenchi Muyo! GXP. Azusa is the father of Yosho, Ayeka, and Sasami. He strongly disapproves of Ayeka's interest in Tenchi, and also greatly underestimates Tenchi's abilities. He is the head of House Masaki, though Funaho rules the house while he is on the throne of Jurai.

In Tenchi Muyo! GXP, Azusa, along with his close friend and Seto's husband Utsutsumi Kamiki, was present at Kiriko Masaki's bonding ceremony. He also appears with his wives Funaho and Misaki when it was revealed that Seina Yamada had became part of Jurai's royal line.