An anonymous donor has replaced Anne Frank books found defaced at Tokyo area libraries.

Hundreds of books by and about the young girl who hid from the Nazis for two years were found vandalized in libraries across Tokyo this month.

Now a person calling themselves “Chiune Sugihara,” a man known as the “Japanese Schindler,” has donated 317 books related to Anne Frank to Tokyo’s central library.

Chiune Sugihara was a Japanese diplomat in Lithuania during World War Two. He saved hundreds of Jews from the Holocaust by issuing them visas that allowed them to flee the Nazis. Sugihara passed away 28 years ago.

Tokyo police have set up a special unit to investigate the mass vandalism of Anne Frank books.

Japan has only a tiny Jewish population, but Anne Frank’s “The Diary of a Young Girl” is widely read there.