After Lu Yu became the unlucky cannon fodder, he only wanted to survive the whole process in order to save his life. Who knows, once away from the villain. This person would immediately come to Lu Yu, and even enthusiastically give Lu Yu tutoring lessons.
When he is hungry, he will bring snacks to Luyu.
When he was thirsty, he would immediately pass water to Luyu to drink.
Why doesn't this villain follow the plot?
Luyu: My life is at an end.
Purpose: Love makes us better.