Lunar Legend Tsukihime: The Arrow of the Sky

Shiki finds out that Arcueid has came to school to visit Shiki while basking in the attentions of his classmates. Ciel is unhappy of Arcueid's presence. A misunderstanding happens between Shiki and his friends. Shiki finds out from arcueid the Nero was just an ordinary assassin. So they plan on going hunting that night. In the manor, Shiki tries to sneak out of the house. Hisui gave Shiki the house and gate keys so that it would be easier for him to get home. Arcueid tells him that the real vampire she was after was named Roa. Then while walking, they encounter their first acolyte.