Gajeru serves as a core member of the Arc End 8th Squad, a team of Periods dedicated to combating monstrous Spirals. He operates alongside teammates Haru, Choco, and Liza.

His distinctive appearance features dark skin, striking golden eyes, and multicolored hair. Gajeru also bears horns, reflecting his world's fantasy setting, and wears a halter top.

Within the team dynamic, Gajeru frequently voices practical concerns about finances and mission feasibility, providing a pragmatic counterpoint to Haru's relentless optimism. This contrast shapes their interactions, especially during their shared efforts to rebuild their closed branch office. He actively joins his teammates on various quests and part-time jobs to restore their division's standing.

Gajeru maintains a recurring rivalry with the Wiseman group, who persistently interfere with the Arc End 8th Squad's objectives. These encounters involve competition but lack genuine malice. His role consistently supports the team structure.