Leave Your Mark by snarcsics

Author's Description: The first time Jimin meets a gaunt, small beta boy named Jungkook in the examination room of Namjoon’s lab, he can’t seem to take his eyes off him. The second time he sees Jungkook it’s because he refuses to eat without him. The third time they meet, Jungkook is more teeth and claws than Jimin can handle.

My Opinion: When it comes to updates they come out really slow, but they are so worth it. I would highly recommend reading this if you ship Jikook. I love the author's writing style because of how much you can visualize everything.

It is a mpreg fanfiction.