Stumble across this in tumblr and I thought it would be awesome if someone wrote this. I could write this myself but I lost my writing capabilities. OTL Looking at the picture it screams Junchun but it all depends on you. (:
(Credits all to original owner)
[EDIT] I kind of forgot this tiny but crucial detail. Hehehehe~ My bad. There's actually a caption under the fanart. "The real reason why he traveled 300 years in the future! LOL." So basically it's more or less like Rooftop Prince but with it's own twist. (: Sorry for forgetting to add this info. :p