【one and only】upside-down sushi

The only people who will talk to me are the Madonna of my class, Rena, and a quiet girl (who stands out from the crowd), Okazu.
But the truth is, Okazu-san is a very douchey guy… he caught me wanking Rena in the bathroom and started threatening me.

What is the fate of “Haya Haya Penis-kun", who is caught by Okazu-chan, a beautiful girl with perverted sexual habits, and is squeezed by the bucket full of cum…?