[Koohii Koucha Maru] Mizugi Kama-chan ga Rinkan Sareruto Hanashi | The Story of Kama-chan Being Gang-raped While Wearing a Swimsuit[Koohii Koucha Maru] Mizugi Kama-chan ga Rinkan Sareruto Hanashi | The Story of Kama-chan Being Gang-raped While Wearing a Swimsuit