Kimimaro, who had the memory of a time traveler, knew that all the tribesmen who attacked Kirigakure Village at night would be killed, and that he would also die of illness at the age of fifteen, he only had one thought in his mind, I want to live.
So Kimimaro chose to avoid Orochimaru and go to Konoha Village.
In order to get rid of death, in addition to practicing physical skills, Kimimaro chose to have a good relationship with the people of Konoha Village, just so that when he was about to die of illness, he could get help from Konoha Village to treat his incurable disease.
In addition, Kimimaro also discovered a secret. When he obtains the blood of another person, he will obtain the other person's chakra and store it in his own body.
With this special ability, Kimimaro believes that his genetic disease can definitely be cured.