The story is included in the Boku to Kanojo no Shujuu Kankei tankoubon (https://e-hentai.org/g/476457/d5be048a95/). This gallery is missing the four colored pages from the first chapter, and the image quality looks a bit worse.
Base +9, TenNyoTaiMoRi +12, Xephir +14, Maximum_Joe +38