Based upon a eroge/VN that spawned many releases including two OVAs, this hentai OVA and one a regular anime OVA and each of these feature Yuko Goto who voiced Mikuru in Haruhi.
synopsis:
You are Kenji; a normal Japanese high school student. You have been living a normal life with your father since you were small. One day, as a child, your father brings home an orphan girl, Yuki, whom you later you acknowledge as a younger sister and become quite a protective older brother.
After a year with the encounter of your sister, the two of you meet a crying girl in the park. She is Hiyori, your classmate and also your new friend. From here on, the three of you are always together, until two years later when Hiyori disappears from school. And three days after that, you learn that she has moved away...
Years later, your story begins. Your father calls saying he will be away for a while. He is rarely at home due to work, so you and your sister live alone most of the time. After another day at school, you return home to sleep. But suddenly at night, a girl's crying in your room wakes you up, but you see nothing.
Who could that be? Merely an imagination?
Subbed in english
direct download:
episode 1
http://hotfile.com/dl/14818006/0b14026/Mizuiro_H_OVA_-_01_(HentaiFantasia).avi.html
episode 2
http://hotfile.com/dl/14819424/9d774b7/Mizuiro_H_OVA_-_02_(HentaiFantasia).avi.html
