During his summer vacation, middle school student Nagasumi Michishio travels to the Seto Inland Sea. One day, while swimming at Mio Sun Beach, his leg suddenly cramps. No one is close enough to notice his desperate screams for help, and so he sinks into the ocean, where he is left to drown alone. Just as he loses consciousness, however, a mermaid appears and saves his life.
That night, Nagasumi is visited by his savior, a girl who introduces herself as Sun Seto—a mermaid from a yakuza family. As it turns out, under mermaid law, a mermaid whose identity is revealed to a human must be punished by execution. To avoid this harrowing outcome, the Seto family propose a solution: Nagasumi must marry Sun or die at the hands of Gouzaburou, Sun's father and boss of the Seto clan. Faced with no other option, Nagasumi takes her hand in marriage.
Now, the newlyweds face the difficult task of keeping their relationship secret. Between Gouzaburou's unending attempts on Nagasumi's life and the eccentric antics of a slew of antagonists, a genuine and innocent love blossoms between the pair as they adapt to their new life.
[Written by MAL Rewrite]+ More
Characters & Voice Actors
Edomae, Lunar
Main
Michishio, Nagasumi
Main
Seto, Sun
Main
Ajitaro
Supporting
Burio
Supporting
Edomae
Supporting
Iinchou
Supporting
Maguro
Supporting
Maki
Supporting
Masa
SupportingRecommended for you
Akiba Maid War
TV
23m
To Me, The One Who Loved You
Movie
98m
To Every You I've Loved Before
Movie
102m
Tiger & Bunny 2 Part 2
ONA
24m
Romantic Killer
ONA
25m
The Human Crazy University
TV
23m
Reiwa no Di Gi Charat
TV
4m
Eternal Boys
TV
13m
No Doubt In Us 2nd Season
ONA
14m
