Demon Or Princess?

Yukina is a 15 year old girl going to Highschool. Ever since she was younger, she was known as a "Outside Outraged Demon". Actually, she was part demon. A flower symbol on her arm showed that there was a demon in her. Her life was known as an outcast. She never told anyone about her past. In her past, she came from a royalty family but it vanished one day and she was left behind during the age of 5. This girl was just unknown to everyone and had to live on her own. Until one day, four people find about her secret. Yui Hikane, Ran Kuroso, Hiro Kuroso and ( Another girl who will be introduced later in the book ). Just what was going to happen? 〔 This is a Action, School Life, Fantasy, Romance book. 〕