After Rebirth, What Should I Do If My Disciple Turns into a Yandere?

[Travel+system+rebirth+single heroine! Single heroine! Single heroine! PS: It gets sweeter after 20 chapters! A little (really just a little!) Slow burn. Readers, please forgive me ( •̥́ˍ •̀ू ) Yun Zhao, the unlucky man in two lifetimes. The First Blue Star: Seeing the adult canyon, the truck driver said "I thought it was a speed bump" and sent him flying! Before he finally breathed his last, he heard the driver: "We are all trying our best to stay alive~" The second world of Canglan Realm: Talent that defies heaven and the system is close to him, he reached the level of the Venerable in 200 years, and became the "Qingwang Immortal" who is powerful in all directions. Result? The disciple Shen Li, who was raised by his own hands and regarded as a treasure, used the famous sword "Yundan" given by him to pierce the heart with one sword! After his rebirth, he looked at the "good disciple" beside him who seemed innocent but had abyss hidden in his eyes, and fell into deep thought, "Tsk, I can't escape, so why not enjoy it?" This is my first time writing an article. I hope you will bear with me ( •̥́ˍ •̀ू )