Toma first meets the main protagonists in North Village, joining their party posing as a Priest. This initial deception hides his true expertise as a Magical Engineer, a role focused on inventing and crafting magical items. His technical skills prove vital to the group's journey.

Upon joining, Toma stands at level 12, overshadowing Nike and Kukuri at levels 2 and 3, implying greater combat or practical experience. Beyond his technical contributions, he develops a particular interest in Migu, adding a personal layer to his group interactions.

Toma's narrative role centers on providing crucial support through inventive solutions, supplying tools and devices essential for overcoming obstacles. His journey evolves from a character with a concealed class to a valued asset recognized for his engineering prowess within the team.