Sakihito Rengokuin

The twelve year old student at the academy and the first human to attend the school. He comes from a rich family and claims himself to be a genius. He is constantly wearing a lab-coat and goggles. He has some sort of obssession over Aldred, and becomes especially attached to Kei after seeing him transform, and sharing a room with him. During this, he is the first one to find out about Kei's body breaking down, and becomes very protective and supportive of him. He tries his best to help Kei cope with his daily routines, even with his eventual disabilities, and researches into removing the Lance from Kei's body after Aldred leaves. He has no Lineage Weapon as he is not a vampire, so he often tries to compensate by building giant combat robots.