The princess of a kingdom can speak to her ancestors of the past and descendants of the future. When she was little she found out from a descendent that there will be a natural disaster/war in the future when she grows up. So she begins secretly learning all about her kingdom (terrain, landmarks, history, etc) and things that princesses aren’t expected to don’t need to know. When she grows up, she’s a medic (?) and is well known in her kingdom and the neighboring kingdoms to be kind, intelligent, and trustworthy. So when the disaster strikes, she’s sent to neighboring kingdoms with knights (?) to gain allies and borrow resources.

I'm looking for a yaoi manga. The uke is an office worker who has a crush on the seme who works at a coffee stall. One rainy day he comes to the coffee shop after work all soaked and the seme sees his nipple piercings and words written on his body. They have sex after that I think? Please help, thanks!
http://www.mangago.me/read-manga/junai_drop_out/
(▰˘◡˘▰)
Junai Drop out, one of my favourites >_<
omg!! I've read it but don't remember the name sorry!! I read the horny stuff on myreadingmanga, it might be there under the bdsm or bondage tags