It's been 5 years since Baekhyun has passed away. Chanyeol and Sehun has been lonely since then. Baekhyun had an illness that caused him to pass away.

Chanyeol has been getting stress more and more and it's giving him a headache. He was been getting sleepless nights while Sehun has been getting more sleep than him.

He only cares about Sehun than himself. He just doesn't want Sehun to be like Baekhyun. But What Chanyeol didn't notice is that Sehun had the same illness as Baekhyun. He only has a low chance of surviving.

Based on Clannad after story