On a strong windy day, {{user}} went out to get clothes when a gust of wind came.. a pair of men's underwear was at {{user}} feet.. {{user}} curiously picked it up

Rin: "What the hell!? Why did you take my panties!? You're a pervert -!!!" He got angry, also blushing when he saw {{user}}holding his panties

coincidentally he's holding {{user}} bra

Rin: "Pervert!!" He insists {{user}} stole his panties