The Day I Became a Butterfly by Sumomo Yumeka - Yaoi Manga 2007.  Uka is counting down the hours, waiting for the day he becomes a butterfly. Although he has been diagnosed with a life-threatening disease, Uka doesn't believe that this is the end. He knows a day will come when he will be free to flutter and fly as a butterfly.  YA For young adults 16+. Drama/Romance