カシュニア=ブラッド=クラウゼル

J Cup.Second year student at Yuridrasil. She is a vampire with a personality suffering from chuunibyou disorder. She gets angry when she gets called "Casi-tan". Casinia is a dummy with high pride. She locked on to the protagonist as a rival as soon as he came from Earth. As a result, she'll continually go to fight monsters that are a higher level than her. However, she has a knack to never ignore her underclassmen having trouble. As a vampire, she is not good with crosses, garlic, or holy water. Though this weakness is not a matter of life or death but she will become weak (and sexually excited) in contact with them.