Kamisama no Uroko
Ch. 7 (prev: rin san was asked by tenko the fox a fox under inarigami-sama if he's willing to abandon his human and go into the spring with rin. He was unable to answer. After, chiharu was worried that he had hurt rin san. Inarigami came to him and suggest she can annul the marriage and water god's job is granting people's wishes in return making someone in that person's family his wife. She also suggest that festival will cheer rin up. Chiharu went to rin and he is really depress and bothered by tenko's word(the words of him saying its impossible to mingle with humans because they would end up fearing him and that humans are fragile that can be easily hurt like what happened to chiharu) (both of them is) rin san think it might be impossible to take chiharu as his wife. Chiharu took rin to cheer him up as inarigami suggested and as a chance to tell him how he feels.)
To Take An Enemy's Heart
One of the great story i've ever read. I cried a lot on this. I don't recommend my future self to reread this story.
Tatsu No Otoshigo