Mekkoku no Kangan

Eunuchs, the only men allowed to serve in the secret garden known as the harem. When a young eunuch named Jafar encounters three beautiful sisters there, their meeting shakes the country to its foundations! Brought to you by the tag-team of Kotaro Shono, the artist of World's End Harem, and Kei Saikawa, the creator of Hero Organization, a tale of suspense in a beautiful, otherworldly country unfolds! (Source: MANGA Plus)