Is this a parody of a real manga series in Sakurasou? I saw this cover in episode 16 of Sakurasou no Pet na Kanojo.



Is this a parody of some actual manga?
It's an actual manga called Hanaori Soushi, by Choujin.




  Having lost their parents at a young age, Chiharu and her brother find strength in each other. The past behind, the two live their lives in peace. However, the appearance of a new transfer student named Hisaya will put an end to these tranquil days. What does he want, and why does it involve Chiharu?