Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?, Episode 1

Nao is a petite boy with a “problem”: although being small in physique, he is endowed with an unusual large penis. One day, his big sister Chiaki decides to have a party with her unsuspecting brother and her two friends to show them her brother’s penis. While the two girls – blonde Nagisa and black-haired Yukiko – make fun of Nao, who is visibly perplexed and overwhelmed by the situation, they become increasingly aroused by the sight of his large penis and soon can no longer contain themselves! Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?, ウチの弟マジでデカイんだけど見にこない?, OVA Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai?, OVA ウチの弟マジでデカイんだけど見にこない ?,My Little Brother Is Huge as Hell. Wanna Come over and See?, 우리 동생 진짜 큰데 보러 안 올래?, My brother has a really big thing. Wanna come to see it!