Soohyun did not mind if our devil would be killed, he said he's not friends with our devil. He is calm, he'll do whatever you want but he didnt even flinch when he was called a "bad guy" because he has to many devil smells. He just kept on smiling. He is probably a psycopath or a sociopath. He has clearly associated himself with many devils before, our devil has a blind faith in him, and who knows whag happened to the other devils that were "friends" with soohyun