He cites Lupin the Third's The Castle of Cagliostro as the driving force behind his enrollment and overall interest in drawing background art.
During his time in school, Sanbe came across a job listing in Weekly Shōnen Jump from Hirohiko Araki, requesting for new assistants.
While not particularly a fan of the JoJo's Bizarre Adventure series, its variety of backgrounds and foreign settings enticed him to submit an application.
After applying twice, Sanbe was accepted into Araki's team around the time of Battle Tendency's serialization and was eventually promoted to chief assistant.
He would go on to work for Araki for a total of eight years before leaving halfway through Golden Wind to pursue his own career as a manga artist.