iida...secretly being really horny...and reader finds out when they open his door to see him spearing himself open on a dildo while wearing a collar with your name on it (reader and him are just friends bc it makes for an interesting plot)
him finally noticing that the reader is there but instead of stopping, he speeds up because he's just THAT horny for you and it feels so good so why should he stop? and the fact you're watching too makes him even harder
maybe the reader walks in grabs him by the collar, making him whine as the reader degrades him for being such a whore and all that iida does is goes dumb as he nods at everything you say
















