Synopsis

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 was christened and received occupation from the goddess.
　His occupation was card master. People around him mocked him because it was a previously unknown occupation and he was a fallen aristocrat.
　But perhaps because of the goddess' gift, Yuto understood the Card Master's abilities from the moment he was given the occupation.
　The power to turn anything in this world into a card and use it, and depending on how it is used, one can become the strongest.
　This is a chaotic story of a boy who entrusted his destiny to cards, and ends up excessive in order to obtain the future he wishes for.