Kaito's now seeing diminishing returns on the experience he's getting from the monsters on floor 3, so he makes the decision to brave the floors beyond... totally unsuspecting of what he's about to find there.
That means it's rare.
‫هذا يعني أنها نادرة.
Ein seltener Magiekern.
Eso es que es raro.
Eso es que es raro.
C’est un noyau rare.
È un nucleo raro!
Então é um núclo raro.
Редкое ядрышко.