Synopsis

Ask Medicus is a reincarnated person who retains memories of his previous life, in which he died young from illness.

To reduce the number of people who end up like his former self, Ask spends his days secretly healing injured and sick people on the streets, dressed in a self-made plague mask and a jet-black coat.

But then, one day, something happened.

After hearing from his older sister Fran about the twin princesses who had fallen ill with a mysterious disease, Ask immediately headed for the royal capital.

He snuck into the royal castle, and after secretly curing the twin princesses' illness, a nationwide search began…