His first job was at Telenet Japan, where he composed the score for the action role-playing game XZR and popular side-scroller Valis II.

After leaving Telenet, he joined Glodia, and together with Nobuhito Koise, composed the soundtrack to the cult classic Emerald Dragon.

Games he has composed for include the Rhapsody series, Disgaea: Hour of Darkness, La Pucelle: Tactics, and Phantom Brave.

[3] In an interview, he commented that he was most looking forward to the orchestral arrangements of "Determination of a Little Princess" from the 1999 Rhapsody II, a fan favorite track, and "Kill Real" from the 2015 Disgaea 5, which required major revisions to make a chaotic vocal song work for an orchestra.

[4] Sato cites Queen, Claude Debussy, Ryuichi Sakamoto, and Kate Bush as major musical influences.