Dolphin Pants

There is no same butt under the sky! When butt geek Kang-Su meets Gong-Min, owner of the perfect butt, he tries to chase after him but only manages to touch it. Even though it's a shame, Kang-Su and Gong-Min soon meet again. They fall madly in love, but because of Kang-Su's his obsession with Gong-Min's butt, they aren't able to move on to the next level... (Source: Peanutoon, translated)