Sorry, "tropes" would have been more appropriate, to explain the story in few words I'd say it's an alpha × alpha omegaverse where the two protagonist, two best friends are stuck in a room with mission to do to avoid punishment/ "you can't get out until you have sex" kinda plot,
Spoiler
-additionally, the seme is trying to change the uke secondary genre (my guess from how it's going), and this situation is most likely orchestrated by him...

Spoiler/ more like TMI
I'd like to take this opportunity to apologize, to myself, my self respect, my ambitions, my free time, my future self, my dreams, and my ancestors like, my great grandma, who crossed a continent with her two young sons to avoid dying at the hands of an oppressive regime, only for me to inherit the family name and dirty it with my existence. I'd like to apologize because I've disappointed myself and whoever exists in this unseen realm that witness it all.
.....That said , I'll continue reading this bc it manages to have 4 out of 5 of my top 5 kinks, while also being well drawn, and that makes it worth so much to me...