The House of 100 Stories The Underground 100-Story House The Sea 100-Story House By Toshio Iwai This is a set of three books. My child was looking at them, but has stopped, so I am selling them. Regarding The House of 100 Stories, there is a scratch on the corner (photos 5 and 6). Since they are used items, there is some wear and tear, but I think they can be used without any problems. Please feel free to ask if you have any questions ^_^