Comment by Kitsu Kan on Raven_Seo

@Raven_Seo I don't believe so because nano was given to the descendant when he was on the verge of death and it helped him to become the greatest of his time. This MC does all this and more by himself with no help needed. Nano heals that MC, allows him to retain vast amount of knowledge and internal energy while the blue spirit only  teaches him a few things and that's all. Let us know forget that he subdued the blue spirit and all other servants that under his wing