Shinseki No Ko To O Tomari 3 【HD】

Is this related to a manga, anime, or a book?

The title roughly translates to "The New Star's Child and My Acquaintance 3" or something similar, but without more context, it's hard to give a precise answer. shinseki no ko to o tomari 3

The search term "Shinseki no Ko to O Tomari 3" refers to the third installment of an adult animated series (hentai) titled "Shinseki no Ko to O Tomari da Kara." Is this related to a manga, anime, or a book