Hentai "Exposing sex at park with a beautiful girl" was released by Tech3d in 2011.

The main character of hentai is an ordinary Japanese guy who has been Dating an incredibly beautiful and popular girl named Miko for a long time. Once a couple went to a local Park to watch the cherry blossoms.  They were so much fascinated by the beauty that opened before them that the feelings that had accumulated inside were released and they surrendered to love. Sex in the Park was dangerous and at the same time gave a certain sharpness to their first time...