Between Heaven and Hell is another Sekai story that I will make it up after the Pieces of Remembrance. This story is about Sehun and Kim Jongin are arranged to get married and ever since Jongin laid his eyes on Sehun, he had never liked him. Torture and abuse for him are the best medicine for Sehun as he doesn't want him to be happy. 

But Sehun is the otherwise, he tries harder to be the best for Jongin but what he gets in returns is, Jongin sells him to his best friend Park Chanyeol. In order of struggling to run away from this Chanyeol guy, day after day, Sehun finds him intimidating and slowly he falls for this guy's loving and caring side. 

but, again... 

As he begins to walk for a new journey of life together with Chanyeol, Jongin comes back, claiming Sehun as his... 

...and who will be chosen, who will be left behind?