Ryuu Yamada is a second-year student at Suzaku High. He is always late for school, naps in class, and gets abysmal grades. His life is a dead bore.
According to Urara Shiraishi, Yamada has the ability called “Duplication.” When Yamada kisses one of the witches with special powers he replicates their power and uses it when he kissed a normal person.
He is also immune to the effects of the witch powers. Instead, he reverses it, making the abilities of the witch affect the witch themselves. However, If Yamada kisses another witch, then the abilities he had before won’t affect the said witch.