“Abandoned houses in Japan that the creator is researching and planning to buy and reform.”

“The phenomenon of over 9 million vacant or abandoned homes in Japan.”

“The phenomenon of abandoned or vacant houses in Japan, often sold for very low prices.”

“The topic of vacant/abandoned Japanese homes and the process of buying and renovating them.”

“The phenomenon of abandoned or vacant houses in Japan, specifically the 'free house' offered on the island.”