NEED HELP WITH FINDING THIS YAOI MANGA!!

So I forgot the title of the manga and I have poor recollection so I'll try my best to explain. So, it starts with the story where they have to train in the art of sex (I guess??) so uke and seme were both in this room training while someone was given instructions through the speaker. Smut ensues, and the seme carries the uke out bridal style because the uke is all exhausted. Fast forward years later, uke doesn't want to go through the same training with seme... stuff happens, seme uses this goo thing to trap uke's hand to a table. Don't remember much but the story was like some kind of intelligence/undercover shit. Yeah. Ring a bell, anyone?