Disclaimer : I don't own Detective Conan and make no profit with this story. All Detective Conan's characters belong to Aoyama Gosho. All of this story was just fictional. If there any same characters and names it was just purely coincidences.

Author's note : I did use some names of Japanese prefectures since the story was about Kansai region in Japan. But this is just for completing the story. No other intentions, at all. And pardon me if there's so many wrong grammar because I'm not native

Kansai Imperial Family

Created by a father who was an Emperor for his second and youngest son, Prince Henzō with the title His Imperial Highness The Prince Imperial of Kansai as the head of states, upon the coronation of his eldest son as the Emperor of Japan at January 1960

Established by his older brother, The curent Emperor of Japan, Prince Henzō then given surname, Hattori. Thus, his full name and title is His Imperial Highness Prince Henzō Hattori, The Prince Imperial of Kansai, Prince of Shiga, as his territorial designation

Prince Henzō married to The Honourable Lady Yukari Takeda, at April 1961 (date unknown)

Their only issue, a son, named Heizo Hattori (平蔵服部) was born on 9 January, 1962 with full title as His Imperial Highness Prince Heizo Hattori, The Prince of Kyoto

Prince Heizo was married to Lady Shizuka Ikenami at 9 June 1986

Their son and also the only issue was born on 22 July 1987, named Heiji Hattori (平次服部) which granted title as His Imperial Highness Prince Heiji Hattori, The Prince of Osaka

Prince Heiji Hattori who was blessed with a handsome appearance, brilliant detective mind and very skilled in kendo, not mention he is also actually a Prince, made him a lady killer even in his young age

As the lady killer, Prince Heiji was arrogant (typically of lady killer) since so many girls swoon and fell for him, except her ...

However before turn into a playboy (so much relieved for both of his parents), this lady killer Prince had met his rival, which actually a girl who so much better at him. And she is a Princess by her own right. Let the fun begin ...

Her Imperial and Serene Highness Princess Dianne Christina Rose was her full name and title. A year younger than him but also one day older. Very funny indeed. Coincidence? Fate? Or ... Soulmate?

They met first because their fathers have personal 'princely business' or something like that which is definitely way too much difficult to understand for a twelve years Princess, even though she was a Hereditary Princess, like him. And yet, there she was. Listening the conversation with the serious adorable face of hers. Woaa ... Wait. Did he just mention her face is adorable? No way. Nuh uh. Not him. He was the lady killer Prince Heiji Hattori. He is the adorable one. Satisfying with his smart deduction, little naughty Prince Heiji Hattori stole one more glance on Princess Dianne, when the Princess coincidentally also glancing at him. The next time he knew, he was blushing hard. And then he turned and ran. Fast

He didn't like her. At all. Just as simply as that. But, deep inside his heart, he knew the little Princess has captivated him successfully without so much effort for the very first second he saw her

So, she was an actress. Prince Heiji Hattori wasn't a type of person who really likes watching movie, for he is already as attractive as Hollywood actor. And now this little actress, who apparently just won Academy Awards (whatever it is) together with him ... yes him, would be in one screen with her as beta couple in the new animation series, Detective Conan

Kazuha Toyama, was the name of her character. Heiji Hattori's childhood friend. Yes, he still prefer using his own name. He didn't comfortable to be called by other name

Situation become worse. This little Princess Dianne or Kazuha (Heiji insisted to call her as Kazuha which strangely she didn't mind) was live in his house, so much for his annoying (and secretly happy), his parents and grandparents are adore her

For days he hates her. Oddly, hate soon became affection just in weeks. Weeks passed by into months and his affection slowly become admiration, for Kazuha has so much admire things in her. Within years, his admiration finally turn to love. And the next time he know, the former lady killer Prince Heiji Hattori was undoubtely head over heels in love towards this little Princess Kazuha