Senior Brother Is Causing Trouble Again

Youyun has a trouble-making senior brother who tries his best to get into trouble every day, but the master still ignores him and instructs Youyun to deal with the aftermath every time. Youyun, who originally aspired to be a hero who saves the world, was forced by her master and senior brother to become an old woman who specializes in cleaning up messes. "Master, Youyun has a bold idea." Youyun said through gritted teeth. "Oh? Tell me what you think." Old man Xuanxu expressed his expectation. "Why don't you let me kill senior brother!" "..."