Tsuburi leads the streaked shearwaters. Noroi, the white-furred weasel who commands a cruel and bloodthirsty clan, slaughtered all of Tsuburi's subordinates, wives, and eggs. This slaughter establishes the core motivation for Tsuburi's conflict against Noroi.

In the 2015 film adaptation, Tsuburi is depicted as female. She joins the defense of Yumemishima island and its inhabitants against Noroi's invasion. This aligns with Tsuburi's role in opposing Noroi's tyranny alongside Gamba and the recruited mice.

Available materials document no additional narrative details or character development beyond this involvement.