Obsessive Young Master Wei: My Beloved Loses Control Every Night

Overseas-trained healer Bian Zhizhi, in order to pay off huge debts, took on an exorbitantly priced private case.
She became the "art therapist" for Wei Zixian, the young master of the richest family in Sheng'an City who suffers from selective mutism.
Everyone treated her like an expensive tool, including the sister who spent the money.
But she became the only light in his gray world.
He only spoke up for her, and only made an exception for her.
The moment you fall in love is also the moment the contract expires.
Faced with her wealthy older sister's warning not to overstep her bounds, Bian Zhizhi promptly disappeared.
Years later, they meet again. The once silent boy has become a rising star in the business world. He corners her against the wall, slowly unbuttons his shirt, and smiles gently: "Sister, it's been a long time."
[Reading Guide: 1v1, both partners are virgins, sweet romance with redemption and a touch of obsessive pursuit]