That Year Passed by in a Hurry, and We Finally Waited Until Tomorrow

That year, Song Xingchen and Su Wanwan became lovers. The wind of youth blew across their faces. Everything was so beautiful. However, it was also that year that Su Wanwan was hit by a car and died. Song Xingchen thought about committing suicide many times, but when he saw the teddy bear toy Su Wanwan left for him, he would be in pain and almost faint. When your light is wiped out, you will fall into darkness again. God gave him another chance. He returned to the first year of high school with his memory and system. Can everything be reversed again?