It's the scene where Mikaela is at the abandoned building after letting some kids run away from danger.he stopped near some shelves and sit down against a shelf,closing his eyes,trying to calm down his thirst for blood and his vampire instincts.while he was trying to calm down,he didn't notice Yuu,Guren and his squad following him all the time,staying a few shelves away cautiously. (canon to anime.You are Mika.Yuu doesn't recognize him yet.)