Futago Shimai Semen Tank Anime Details and Episodes 1-3. Futago Shimai Semen Tank (双子姉妹ザーメンタンク); Comic Shingeki 2024-01, 02, 03 4-6. Chiken Byoutou (痴験病棟); Comic Shingeki 2022-04, 2023-02, 04 Series info Watch free DetailsFormatMangaStatusFinishedSourceOriginalCountryJapan GenresHentai RelatedFutago Shimai Semen Tank (Related) RecommendationsZwilling: Futago Mahou Isha × Hatsushou Usagi = Cunni OchiGakusei KaikanGakusei: Shougakuseido