On a rainy day, Yui was dumped by his girlfriend. A very pretty girl comes along and offers him a handkerchief and even some "comfort". He was very smitten by how pretty she was and went into a lovehotel with her. Only to find out that "she" is actually a "he". Yui also finds out that his name is Runa and he was conceived in secret by a famous actress. Runa knows that his father is a famous actor and he wants Yui's help to meet with him. But if the media finds out about Runa's existence, there will be a huge scandal.

[From Aarinfantasy Forums]