Oath for the Rest of My Life

In the early stage, he is cold, arrogant and stubborn. In the later stage, he is obedient and submissive to the female protagonist. The male protagonist × the gentle and calm female protagonist. - Shu Yu and Yan Heng have known each other since they were children because of their family connections, but they had nothing in common since they were young. Until one day, Shu Yu offended Yan Heng in order to help others... Two days later, Shuyu saw him at home. Her father told her: Yan Heng was temporarily staying at their house because his family was going to do business elsewhere. The young man stood in the room, smiled at her and said, "I will ask you to take care of me from now on, Sister Shuyu." Shu Yu:...... - The person I love is the eternal light in the sky, the moon in my heart, and the only unchanging oath for the rest of my life in the long river of time.