Away from the Lupin Netflix series, Arsene Lupin is a fictional character created by French author Maurice Leblanc in 1905.
The character became so popular at the time that Leblanc wrote 17 Lupin novels and stories.
The first collection Arsene Lupin, Gentleman Burglar was released in 1907 and is seen in the Netflix drama.
In a flashback moment, Assane is seen being given a copy of this book when he was younger and then in present day, Assane gifts his son with a new edition of the same novel.
source: express.co.uk