[Machine Translation] A specialist survivalist lives on a deserted island with four beautiful girls! It has been more than ten years since the birth of the device that transfers people from Earth to other worlds. A hundred adventurers from Tokyo's special adventurer zone were transferred to another world, but the transfer device disappeared shortly afterwards, closing off their way back to Earth.... Stranded on an uninhabited island in this other world, high school student Kakeru Satomi makes full use of the survival skills his grandfather taught him and begins a dangerous and mysterious life of survival with four beautiful girls who have gathered to depend on him...! A survival specialist lives on a deserted island with four beautiful girls in a slightly sexy story!