According to wikipedia, Kiss X Sis is a popular ecchi manga series about a teenage boy living with two slightly older stepsisters who keep on trying to seduce him with relative success, you can read it online if you wish.
And this doujinshi seems to be featuring the manga’s male main character, with Mikuni Miharu, apparently one of the local female harem members. With thick eyebrows, glasses, nice tits, an hourglass figure and only very thin bar censorship over her, the girl has good sides ^^
That said, the art is average, in my eyes at least, so I’m not promising you a crazy awesome read, more like a good time ahead, probably especially if you already know Kiss X Sis
The doujinshi has been released by Vilis and Brandon, from Hennojin, thank you!