At Ran's Wedding, Conan Slipped the Wedding Ring Onto My Finger Under the Table

The system's task was to place a wedding ring on Shinichi Kudo's finger at Ran Mouri's wedding. I did it, but using Conan's body, under the table where no one could see me. He said this was the only title he could give me. 01 died three hundred times to earn this S-rank mission. My name is Shen Nian, a top employee of the Supporting Character Perfection System. As long as I complete this mission and accumulate enough points, I can go home. I clutched the bridesmaid's bouquet, looking at myself in the dressing mirror of the opposite church. A delicate and harmless face, my identity was Ran Mouri's college classmate, a character who didn't even have a name in the original work.