Go Brother!

Shi Miao wishes every day that her irresponsible and prankster older brother Shi Fen would just disappear from her life. Then one day, her wish comes true, and he becomes her best friend's brother. While she pities her best friend's fate, she is ecstatic by the turn of events and thoroughly enjoys being a single child. As she watches Shi Fen go about his days hanging out with his friends and pulling pranks, she discovers a secret he has been carrying...
~~ Adapted from the manhua "Please Take My Brother Away!" (快把我哥带走) by You.Ling (幽·灵).