Flaming Heaven：Valkyrie

In order to protect the mother and sister, 7 year old Cesare chooses to follow his father Long Borgia, the Pope of Messiah, to Florence, and joins the cruel robotic army. With his special genetic traits of owning purple eyes, he becomes a knight driving the robot, “the Flaming Angel”. Through this extraordinary journey, Cesare also starts to realizing what is his own truth in the life.

(Source: Mangatoon)