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!
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![Opening | Romantic Summer - SUN & LUNAR [Subtitled]](https://i.ytimg.com/vi/DwdTEwp7-Dw/hqdefault.jpg)
