In This Life, the Cannon Fodder Is the Protagonist

The senior brother, born with a cold, expressionless face, has taken on a disciple. But this disciple isn't the original article. Where did he come from? In his previous life, he was a former playboy who was killed after getting screwed over by the System, and in this life, he has memory loss and a broken heart. So sad~ sobbing (T_T). There's no helping it, I might as well top him! So this is a seme-focused story. So this is a 1v1. So this is the naturally cold-faced senior brother x his disciple. If you run into a trigger, Xiao Jin accepts no responsibility.