Kojima

A short boy whos in Takayas class and the first one other than Takaya to find out about Lilim. At one point in the story Lilim has a disagreement with Takaya and stays with Kojima for a while. In that amount of time Kojima teaches her to write. Unlike the all the other boys at his school save Takaya common sense overrules his infatuation with Lilim. He becomes briefly infatuated with the lilim only known as Sempai however after she gives him his first French kiss and steals his lifeforce. Due to this infatuation he attempts to summon a lilim demon through a magical ritual but actually conjures the wyvern that will later become Pyuchan. Even before the events in this story he has been a bit of an occult fan due to which he becomes Takayas main source of information about lilim and the occult in general.