Princess Loves Me, Am I Not Your Only Dog?

"A pampered and bright little sunshine girl × a low-quality puppy with low self-esteem and a dark sense of worthiness" (The younger sister is good, the male protagonist is good, but the system is bad!) "Are you willing to be my dog, Chu Xiao?" In the ice and snow, with his life hanging by a thread at the last moment, he met the soft-hearted God. The pampered and arrogant little princess was bright and dazzling. He had been proud for fifteen years. When faced with her problem, he said yes by some strange combination of circumstances. But he had clearly promised to be a dog, but how could he have a shop, go to school, have friends, and have a brighter and brighter road to becoming a legitimate heir? ! She was so good that he couldn't help but fall for her, willingly cooperated and gave her sincerity. But the system said he was a vicious supporting actor? Don't deserve sincerity? Let the little princess torture him severely to pave the way for future time travellers. Oh, his thin lips curved into a bloodthirsty and sharp smile. Even if the world were to be repeated a thousand times over, his heart would still only fall for the little princess.