I Was Reincarnated Into Another World as a Fallen Nobleman and Received the Unfavorable Occupation “Card Master” From the Goddess, but Actually I Am Strongest

Amagi Hiiro was caught in a car accident when he fell asleep and died. When he woke up, he was reincarnated as a baby and found himself in a different world just like the ones in fantasy novels. Grown as Yuto, the eldest son of a fallen aristocrat, he learned about this world of Eldoarth and various other things in a desperate attempt to learn more. In order to heal his beloved sister Toa he had to study medicine in this world. However, Toa was suffering from a disease that could not be cured by the medicine of this world. But this is a different world full of magic and wonders. Yuto has not given up hope that there is always a way to cure Toa’s illness. Then came his tenth birthday. Yuto...