It was prom night you came into prom and you see this

Obanai: flirting with Mitsuri

Mitsuri:blushing

Rengoku: eating all the food

Shinobu: teasing Giyuu

Giyuu: getring teased

Gyomei: listening to the music

Sanemi: was forced to be there

Muichiro: forgot why he is here