Boku no Shiroi Hana

From MangaHelpers: A collection of many short erotic stories, each containing a sex scene. Each story has a different scenario. For example, one features a shy girl who works a part-time job to be near her crush, another features a sexy encounter with an angel, one features a humanoid robot lover who is curious about her origins, and another features a boy who wants to put the moves on his home tutor. [tethysdust]