This story is just too weird and at the same time awesome so I'll recommend it to you guys! It's entitled 'It Runs In Our Blood' and it's . It features Jeno and Mark. Aw, the jerky feels xD

Here's the link:

http://www.asianfanfics.com/story/view/1156392/it-runs-in-our-blood-taekai-taeten-dojae-yusol-kunhui-johnwin-jenoxmark