My Bride is a Mermaid OVA

瀬戸の花嫁 OVA

Now in his third year of school, Nagasumi Michishio is still keeping the peace between his mermaid wife Sun Seto and her rival-turned-housemate Lunar Edomae, while both of their fathers remain as overprotective as ever. This OVA drops the ongoing plot for standalone shorts, adding two new characters into the mix as Nagasumi spends most of his time talking down one crisis after another and rescuing whoever's in trouble that day.