Yamazi Machina is a games writer. Machina has been working with NIS America and Nippon Ichi Software. Machina's first game was Disgaea Infinite for PS Vita and PSP in 2009. Next, Yamazi Machina worked on Disgaea 4: A Promise Unforgotten taking on the role of writer. Machina also worked on Disgaea 4 developed by NIS America for PlayStation 4. The latest work of Yamazi Machina was Disgaea 4 Complete+, published in 2019.