Sehun had always been mistreated by his family. He was always compared to his brothers about educations, cooking and structures of manners. His father descipline him more and his mother barely puts her attention on him. His brothers cares about him but they also loves the compliments from their parents.

What's a happy ending for Sehun?

--To leave the world.

http://www.asianfanfics.com/story/view/895787/north-and-south-star-angst-life-sad-exo-kai-sehun-sekai