Guys! I made a oneshot and I don't know what character to use, haha. So I want your help :D

The genre of my oneshot is angst.

I hope you can help me think of the suitable character to use. 

And I'm thinking of using Haesica, Sifany, Kyuna, Sunsun, Taeteuk. If you want other pairing you can suggest, haha. 

Well, I want your opinions today so that I can post it up later. 

Thank you!