[1] Toyama was born in 1970 in Miyazaki Prefecture, and studied art in Tokyo Zokei University.

[3][6] One of the first games he worked on in Sony was Yoake no Mariko, a collaboration with Spümcø, where he was a gameplay designer.

Toyama then worked on the PlayStation Vita game Gravity Rush, released in 2012.

He has founded Bokeh Game Studio alongside Kazunobu Sato and Junya Okura, both of whom worked on the Siren series, on August 13, 2020.

[12] Toyama announced that he plans on returning to the horror genre, with a debut game inspired in particular by film directors Wong Kar-wai and Fruit Chan.