Transferred to a new world with powers to summon Servants and his main power being Demonic Power, what kind of life will he lead? What purpose he has in that world and what does he want to achieve, despite the fact that he had achieved EVERYTHING a person could possibly achieve and even beyond? Raiden Ei, Lili Artoria, Atalanta, Inori, Sakura Matou, Xia Qingyue(ATG) will be main FL