Tiziano and Squalo are sitting on the roof, looking out for the Bucciarati gang, but instead of them they see that someone has come here, onto the roof.

Squalo: Who is this?... — Squalo thinks, nervously looking at person.

Tiziano: I don't know who you are, but what do you need? — Tiziano asks in a calm tone, looking at person dispassionately.