Sweet Black 

Haru and Sagiri are best childhood friends. When Haru develops a crush on a model called Jay, a jealous Sagiri yells ''I can accomplish everything!" One week later, he became a model. Haru was happy for him, but the two began to grow apart; Haru stayed the little girl she used the be, while Sagiri acted like a classy mature guy. Will Haru still keep visiting Sagiri and help him with chores, or will Sagiri actually grow up and leave Haru for good? Includes one-shot: Kamen no Pianist