I love Boku No pico!!!

Boku no pico is a Japanese series of shotacon anime OVAs produced by Natural High. The producer has described it as "the world's first Shotacon anime". The series consists of three episodes, as well as a one-shot manga chapter, a computer game and a video compilation of songs. Because of the high cost of producing anime, the characters and contents were intensively product-tested before production began.

Pico = A blonde haired boy who works part-time at his grandfather's bar in the summer. He's often shown swimming, usually naked or in a blue Speedo. He has worn girls' clothes ever since Tamotsu gave some to him as a gift.

Later, feeling hurt that Tamotsu wouldn't define their relationship, he rebels by cutting off some locks of his hair and runs away from home. The following summer, he spots Chico swimming naked in a stream while riding his bike. He soon becomes friends with Chico, who calls him oniichan (big brother) and forms a romantic and sexual relationship with him. In his relationships with both Mokkun and Chico, he is the uke, though the latter is somewhat reversible.