Chapter 551

Pronto! On the Line, Part 1 (！通話中 その①), originally in the WSJ release, is the five hundred fifty-first chapter of the JoJo's Bizarre Adventure manga. It is also the one hundred twelfth chapter of Vento Aureo.

Summary
Bucciarati's group searches for any hint that could lead to the Boss, hacking into numerous police databases to look for potential correspondence with the Boss' fingerprints. They find nothing, and are suddenly contacted. Bucciarati tells Giorno to halt the connection, but the third party confirms that they are on the same side as Bucciarati, revealing the Boss's true name: Diavolo, and his time erasure power.

The third party invites them to meet in Rome, explaining that the Arrow may unlock a power that can beat King Crimson's time erasure power. Bucciarati accepts the offer and the gang confidently leaves Sardinia. They are however spotted by Doppio, to whom Diavolo orders to look at the landmark on the beach, as the traitors have a too determined look on them to have been truly defeated.