Fantasy: My Disciple Is a Yandere

Li Yu travels through the world of immortality, binds to the "Immortal Emperor Development System", and trains the bound object to become an Immortal Emperor, and he can get double returns! He rescued Su Xiaoxiao, an orphan girl who was disguised as a man and suffered bullying, and took him as his apprentice, starting a journey of freedom. While others accepted disciples and established sects, the two of them only became casual cultivators and heroes, traveling all over the world; while others practiced hard for hundreds of years, they relied on the system to draw prizes and get double returns, and their cultivation levels continued to increase! It's just that as the apprentice keeps raising him... Why is it getting worse and worse? During the day, you should be sweet and call me master, but at night, you should be yandere and have it all to yourself; They said they were just pretending to be a couple as a stopgap measure, so how could they just pretend to be a couple? Li Yu: "Wait a minute, didn't the system ask me to cultivate an Immortal Emperor? Why did I cultivate a Taoist Companion?!" Su Xiaoxiao (smiling and drawing sword): "Master, you can't escape." ———— [Single heroine·Yandere development·Master and apprentice dual strength·Systematic article] From the beginning to eternity, from dependence to love, let's see how these "chaos twin stars" slash the heavens with their swords and become emperors with ease!