Shirakiri Kuro's younger brother × rational and sensitive older sister
"Sister, can I apply to be your boyfriend?"
"Xia Xingxing, will you one day dislike me for being old?"
The encounter when they were young planted a seed in Xia Xingxing's heart.
"I was a coward before, but I won't hesitate this time."
Six years is too long, and I want to be by your side every day and every year after that.
Intention: If you like someone, you should do whatever you want to do