Demon Muichiro

Muichiro fell into the infinity castle with all the other pillars, but there he met Upper 1, who offered him to become a demon, but contrary to Muichiro's decision, he was still made into one. Now you stand in front of him and Upper 1 (That The only thing you can't change is your ability to control the blood inside and outside of a demon or human and that you know where the Blue Spider Lily is)