Shinobu Yuuki

Shinobu is Ichirou di Maria's uncle. He is Shion's younger brother.
Since he met Yuusei and learnt about the existence of vampires, Shinobu trained hard in order to kill them by himself.
He first appears to the church to see Yuusei again, but because Yuusei is dead, he encounters Ichirou and mistakes him for his father, Yuusei.