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When Lan Wangji's parents are killed in an accident, he and his older brother Lan Xichen are left to fend for themselves. But years later, Lan Xichen is involved in an accident that leaves him in a coma and Lan Wangji stranded. He doesn't know how he'll pay to take care of his brother in the condition he's in. That's until the most popular boy in his college and the son of the man who owns the hospital his brother is residing in makes an unexpected proposal.

"I'll make sure all your brother's hospital expenses are paid off until he recovers. All you have to do is be my date to my mom's wedding this weekend."