another chen centric fic is wolf school : http://www.asianfanfics.com/story/view/844707/wolf-school-superjunior-exo-chenris-xiuhan-bts-wolfau-ing
and you can also read jinmark fics I am sure you will love them....
these are my fav. but I am sure you will definitely love them

https://www.asianfanfics.com/story/view/1082953/i-ll-be-there-once-we-find-our-way-got7-jinmark-markjin-slightjjproject

https://www.asianfanfics.com/story/view/1078325/after-the-anger-what-will-you-do-with-your-love-angst-jinyoung-romance-mark-got7-jinmark-markjin

https://www.asianfanfics.com/story/view/1004404/dared-to-love-jinmark-markjin-jackbam-marknior

https://www.asianfanfics.com/story/view/1016310/loving-you-is-my-happiness-2pm-jaebum-jackson-got7-jinmark-markjin

https://www.asianfanfics.com/story/view/962259/melting-his-heart-got7-jinmark-markjin-marknior

go for author itdoesnthurtme . her fanfictions are awesome even though all of them are based and mostly of sekai but you will love them. here is the link for... I'm always your's (even when you don't want me) : http://www.asianfanfics.com/story/view/767618/i-m-always-yours-even-when-you-don-t-want-me-sekai-kaihun-xiukai-xiuhun-xiuhunkai-xiukaihun and another of my favourite author is rebel4life one of her story is you are my kidnaper : https://www.asianfanfics.com/story/view/952758
these are some archiveofourown works...
http://archiveofourown.org/works/3607299
http://archiveofourown.org/works/2630270
http://archiveofourown.org/works/5052652
http://archiveofourown.org/works/6432556
http://archiveofourown.org/works/6494914

like. Just with Chenny Chen Chen or would you like any other ships?

Do you mind pairings?