Nagasarete Airantou

After a dispute with his father, young Ikuto runs away from home and boards a ship. During a hurricane the boy goes overboard and after several days at sea he gets washed ashore at an uncharted island. A young girl named Suzu (no surname given) saves his life and nurses him back to health. Soon poor Ikuto has to learn that all human residents of this island are female. Furthermore, those people seem to be stuck in the times of Meiji Restauration and by that means aren't aware of the existence of electricity, gas or other benefits of today's society. With him being the only boy and in fact the very first they have ever seen, the girls' instincts for love, jealousy and procastination awake, thus Ikuto gets chased around on a daily basis by merely a dozen or more overconfidental, somehow superpowered girls who all want him for themselves for "making babies and stuff".

As they never lived alongside men before, the girls virtually know no modern modesty and are just more than happy to bathe together with Ikuto or run around naked in his presence who in return just freaks out every time up to the point of fainting out due to excessive nosebleeding.