
When Xiaowei was little (light power), his dark-twin (shadow power) fell for Mi Sheng, and Mi Sheng fell for Xiaowei. The bro put Xiaowei into a coma for a few years, which is how he ended up in the same class as Feng Ming. It was all part of his plan to get Mi Sheng. Then the bro killed the parents and Xiaowei woke up. He met Feng Ming - who was interested in him since he looked so much like his crush, the dark-twin, and Mi Sheng started going mad when he saw Xiaowei feeling attached to someone else. Both the dark-twin and Mi Sheng have made deals with the creepy/mysterious Marax who is possibly a demon and has an agenda of his own. Mi Sheng is now technically dead, but the dark-twin has put a shadow inside him so he is a doll, and is hoping to bring him back.
That was so beautiful, I almost cried. Doumeki is such a lovely guy, and Yashiro is so sad.