Mayusura is a blue, gelatinous slime tamed by the protagonist Yuji Sano after his summoning to another world. Among Yuji Sano's tamed slimes, Mayusura possesses the typical white eyes of its species but is visually distinct due to its prominent, thick eyebrows. This slime exhibits a particular fondness for consuming food, marking it as a defining behavioral trait. Mayusura functions within the collective of slimes assisting Yuji.