Nagasumi's in hot water after a beautiful, young mermaid named Sun saves him from drowning. The deep-sea sweetheart's dad is a merman yakuza prone to executing anyone who learns his family's scaly secret! Luckily, there's a catch - if Nagasumi agrees to marry Sun, he just might avoid sleeping with the fishes!
as 満潮 永澄 / Nagasumi Michishio (voice)
as 瀬戸 燦 / Sun Seto (voice)
as サーたん / Saturn (voice)
as 永澄の父 / Nagasumi's father (voice)
as シャーク藤代 / Shark Fujishiro (voice)
as 伊院千代 / Class President (voice)
as 猿飛 秀吉 / Hideyoshi Sarutobi (voice)
as 永澄の母 / Nagasumi's mother (voice)
as 猿飛 悟 / Satori Sarutobi (voice)
as 巻 / Maki (voice)
as ルナパパ / Lunar's Papa (voice)
as 瀬戸 豪三郎 / Gozaburo Seto (voice)
as 三河 海 / Kai Mikawa (voice)
as 不知火 明乃 明星 / Akeno Shiranui (voice)
as オクトパス中島 / Octopus Nakajima (voice)
as 政 / Masa (voice)
as 江戸前 留奈 / Lunar Edomae (voice)
as 瀬戸 蓮 / Ren Seto (voice)
as 銭形 巡 / Mawari Zenigata (voice)
as 永澄の祖母 / Nagasumi's grandmother (voice)
as 永澄の祖父 (voice)
