Naïve 16-year-old Mamori Tokonome is accustomed to being teased at school for having an unfortunate surname that can also be read as "virgin." However, young Mamori will soon have to get used to being teased in other ways...
Kidnapped during gym class, Mamori wakes up only to find herself stranded and under attack on the exotic island of Mermaid. Luckily, enigmatic fellow castaway Mirei Shikishima knows exactly how to take the lead—through a passionate kiss, Mirei unleashes Mamori's Exter transformation abilities, turning the innocent red-head into a battle-ready cutlass through the power of arousal.
The duo will need to tap into that power as Mermaid Island is full of potential friends and foes: Charlotte, the sadistic Liberator of an Exter harem; the gluttonous and crafty Meifon; the mysterious but charismatic Akira Hiiragi; and the erotic biker duo Lady Lady. Mamori and Mirei's powerful and intimate embrace is the only way for the pair to ensure their survival on this scandalous island.
[Written by MAL Rewrite]+ More
Characters & Voice Actors

Hasumi, Rayne
Supporting
Hiiragi, Akira
Supporting
Kazami, Torino
Supporting
Lady J
Supporting
Minimi, Nimi
Supporting
Oya, Noe
Supporting
Saejima, Kibami
Supporting
Sagara, Momoka
SupportingRecommended for you
Saenai Heroine no Sodatekata Fine
Movie
114m
Ghost in the Shell
Movie
82m
Black Butler: Book of the Atlantic
Movie
100m
Made in Abyss Movie 2: Wandering Twilight
Movie
105m
Spice and Wolf
TV
24m
Millennium Actress
Movie
86m
Tomorrow's Joe
TV
25m
Initial D First Stage
TV
25m
Food Wars! The Second Plate
TV
24m
Detective Conan: The Jet Black Chaser
Movie
111m
Kiki's Delivery Service
Movie
103m
No Game, No Life
TV
23m
Noragami Aragoto
TV
24m
The King's Avatar: For the Glory
Movie
98m