Sei in some rocking booty shorts

Sei twerking.

sei does the twerk thing. everyone thinks he definitely has way too flat an ass for that

sei's buttock is too flat he upset

sei questioning god why his ass is so flat

sei cries knowing that he'll never have as much booty as aoba

Sei cannot compare to the aobooty

Aoba blins Sei with his glorious booty in yellow thong

Sei is horrified at the aobooty, shocked to find out it is much smaller than anticipated