JoJo’s Bizarre Adventure Vol. 30 (Shueisha Bunko Edition) -Golden Wind-

Set in 2001, two years after the death of Yoshikage Kira, Koichi Hirose travels to Naples, Italy on a mission from Jotaro in search of a boy named Haruno Shiobana, who is believed to be the son of DIO. But as soon as he arrives, his luggage is stolen by a blonde-haired boy who goes by the name Giorno Giovanna. When Koichi notices the similarities in the names and sees him use a strange power, he begins to think that Haruno and Giorno may be the same person. His suspicion is confirmed when he later comes across Giorno at a cafe, who reveals himself to be a Stand User!
This Shueisha Bunko Edition of Hirohiko Araki’s celebrated series includes chapters 440-454 of the original manga in a smaller pocket-size format.
Notice: This book is written in Japanese.