The Man Who Devoured Gods serving as the main focus of the Adventures series.
As revealed in Volume 5, his identity is ■■■■■■■■■■. His illustrator, Sakamoto Mineji, was commissioned to draw FGO’s ■■■■■■■ grown into a young adult. He’s closer in nature to his mother than to his father.
The highlights of this series are El-Melloi II’s Rite of God Identification and his divinity manifested in three stages: Divine Core Loading, Divine Case Deployment, and Divine Chaff Entanglement.
The young man could be considered mostly pure and innocent in the first novel, but his nature greatly changes with his each major moment.
Meeting El-Melloi II sparked his curiosity, meeting Ryougi Mana sparked his interest in stories, and meeting Bai Ruolong sparked his competitive spirit, in a way that could only be described as him becoming a new him with each step. This is growth while simultaneously being loss.

TYPE-MOON BOOKS material: The Adventures of Lord El-Melloi II Glossary