I Am? My Wife!

What? Ge Yan, who died with his wife, found that he was reborn, but when he saw himself in the mirror, he looked like his wife when she was young. In this life, he will play his wife, return to high school campus life again, uncover many mysteries, and find the real culprit who killed his wife, daughter, and himself! Could the murderer be someone hiding on this small high school campus?