In his third life, just as he was about to return to the original world as the empire’s most renowned physician, betrayal ended everything in death and forced him back to age three once again. This time, however, there would be no more regressions. He realizes that raw skill was never his limitation; rather, it was the absence of someone strong enough to protect him.

With that understanding, he devises a new strategy to survive the fate awaiting him. He plans to heal the realm’s most powerful warriors, all of whom have retreated from the world due to an incurable disease. In exchange for curing them, he will secure their absolute loyalty as his protectors.

“This is a contract: I will heal you, and you will protect me,” he declares.

Now, the question remains whether this life will finally be the one that changes his destined ending.