Ahiru no Ouji-samaDuck Prince - Morinaga, Ai

Reiichi is in love with Yumiko, the prettiest girl in school. His problem: he's ugly. When he saves a magical dog from certain death, he is granted one wish in return and he wishes to become beautiful. Now he can be true to his heart, but whenever he touches Yumiko with lustful thoughts, he turns back into his ugly self...

(Source: ANN)

Ahiru no Ouji-sama was partially published in English as Duck Prince by Central Park Media from May 1, 2004 to November 3, 2004 with 3 volumes. The publisher is now closed.