Senior Sister's Junior Brother

Single female protagonist "Let's call you Lin Mo! How about it?" The woman asked with a smile, which gave the boy a name. "Sister, I will always be with you!" The young man's serious promise makes the woman happy. In front of the two snowmen, one big and one small, they made a promise to go outside together. But in the end, the snow stopped, and only the young man walked out. … "My name is Chu Mu, you can call me Senior Sister from now on." The girl said hello with a smile on her face, which made the boy's vision blurred with tears. Since then, he has been calling her "senior sister." He once again made a promise in his heart, hoping that the ending of her story would be happy. … The clouds fell over the mountains and it started to rain. Lin Mo climbed up the stairs, and in front of him were countless swords pointed at him. But this time he learned to use a sword. Finally, the rain stopped, and he was covered in blood and walked down the mountain with his senior sister on his back.