After Thousands of Years of Seclusion, My Senior Sister Who Had a Crush on Me Became an Emperor.

Jiang Hao, a time traveler from thousands of years ago, obtained the system. Not long after obtaining the system, he began to practice in seclusion. However, this seclusion was something he never expected. He had been in seclusion for thousands of years. Thousands of years later, things and people have changed, and the small sect that was once has become a large sect that is famous all over the world. The senior sister who once had a crush on him has become an emperor-level expert who stands at the top of the world, and has also become the leader of the sect. Faced with this situation, Jiang Hao learned about the new function of the system... … "Sect Master, take care of Jiang Hao, he will blow up all the alchemy furnaces in our medicine refining hall." "Sect Master, the spirit beasts in our Beast Control Hall are often roasted by Jiang Hao, please take care of him..." "Sect Master, Jiang Hao bullies the sect disciples everywhere with the treasure you gave him..." Jiang Qingyu, who was facing a complaint from the sect's senior officials, found Jiang Hao. "Junior brother, do you want to practice alchemy? I will find the strongest alchemy master in the world to teach you..." "Junior brother, do you want to eat spiritual beasts? Tell senior sister and she will hunt them for you..." "Junior brother, if the treasures are enough, I don't need my senior sister to give them to you." Facing his gentle, cold and arrogant senior sister, Su Ran refused: "Senior sister, I don't want it, let's sleep together now..." … Single female protagonist + daily life + dog food + sect + system + time travel and rebirth + funny