Noblesse 1x10

Rael arrives at Ye Ran High School to collect Seira per the Lord's order, but he encounters M-12, Tao, and Takio there, and a fight breaks out. Who is this man suddenly confronting the three of them? Seira tries to persuade Rael to leave, but Rael continues to do as he pleases. And for the sake of protecting Raizel, Frankenstein can't just stand by and watch all this carry on...