Individual sales are also possible. Please inquire if you are interested. For individual sales, we are considering selling them for about 600 yen per book. "Survival in the Insect World ③" "Survival in the Dinosaur World ①②" "Survival in the Human Body ①③" "Survival with New Viruses ②" "Survival in Space ②③" "Survival in the Desert" "Survival in the Savanna" "Survival on a Deserted Island" "Survival in a Cave" "Survival from Earthquakes" "Survival from Volcanoes" "Survival in Extreme Weather ①" "Survival in Extreme Cold" "Survival in the Deep Sea" "Survival at the Natural History Museum ①②" "Survival in the Robot World ①③" "Survival with Nuclear Power ②" "Survival from the Energy Crisis ①" "Survival in the Himalayas ①" "Survival from Typhoons" "Survival in the Plant World ①" "Survival at Night Safari ①" "Survival in the Underground World ①" This is a set of the above 28 books.