If You Promise to Attain Enlightenment and Cultivate Immortality, You Will Become a Saint

Lu Fan was reborn into a world where humans and demons coexisted, and became a glorious... Half-demon. "What, half-demon can only live until the age of eighteen?" "If you want to continue to survive, you must sign a blood symbiosis contract with humans?" "Oh, it only requires a five-year contract at most, right? That's okay." At first, Lu Fan refused, but—— … "Lu Fan, don't touch the broom, I'll do it!" "Not that one!" "Elixirs and exercises are all bought for you..." "When you go to school tomorrow, remember to wear these new clothes. As a teacher, you..." Lu Fan looked at the pile of things in his hand and sighed: "Actually, you don't have to!" Fortunately, I made breakfast today, otherwise—— [... Three meals a day, and a little favorability reward. [The favorability level reaches... Rewards for swordsmanship proficiency...]