[べにー研究所] 実母代理出産〜白川優香の場合〜前編+後編 [英訳] , [Benii Kenkyuujo] Jitsubo Dairi Shussan ~Shirakawa Yuuka no Baai~ Zenpen + Kouhen | Surrogacy: The case of Yuka Shirakawa [English]