Warnings: Creator Chose Not To Use Archive Warnings
Relationships: Katsuki Yuuri/Yuri Plisetsky
Characters: Katsuki Yuuri, Yuri Plisetsky
Additional Tags: Semi-Public Sex, First Time, Blow Jobs, Hand Jobs, Plot What Plot/Porn Without Plot, POV Second Person, No Dialogue
It's a horrible idea for so many reasons, and on the top of that list is that your sister is going to kill you for desecrating the onsen.
Or, the one where Yuuri and Yuri have sex in the onsen.