next door story [soukoku]

cover and characters not mine
chuuya had lived with his mother kouyou and his sister kyouka in a really big house divided by apartments

he had become a real fan of a series of histories that he read in an online platform about a person who writes about his life
though he never thought it was real becauss of its sadness and pain

everything changes when a famous doctor and his two children moves near them, and the two boys room seem to be separated by a extremely thin wall