Suuji lost her father during an infected assobot attack on their city. Childhood exposure to legends about saving the world spurred her to join the quest alongside the assobots and Sanzo. Initially lacking combat skills, she relied on a flying vehicle for transportation during the journey.

Her role transformed upon discovering a specialized bow only she could wield effectively, producing sounds that affect assobots. This weapon proved crucial against the main antagonist; Suuji uniquely empathized with his suffering, understanding his emotional turmoil when others could not. In the final battle, she used the Bow of Sun to deliver the decisive blow, allowing the antagonist's soul to find peace.

After collecting all 49 keys and curing the assobts infected by the Destruction Virus, Suuji chose to travel back in time with the group. She sought to pursue Professor D's feather, which had entered a temporal wormhole, and continue their shared journey.