A Guardian who attended the GUARDIANS Training School at the same time as Ethan. He and Ethan are rivals, often competing for first place in the Colony Frabullu Tournament. He's a bit of a Lothario, but also a devout follower of the Gurhal Faith, and claims that all the girls he has met have come to him through divine intervention. At heart he is a very diligent prodigy. Having been briefly exposed to large quantities of D-Cells in the Hive during the events of Phantasy Star Universe, Hyuga eventually mutates into one of the first Deumen in Phantasy Star Portable 2: Infinity.