Piro speaks:
ah, gomen. its not clear (to me it is, but i can visualize the table in front of piro)
Yuki is browsing the shelves on one side, Piro is browsing thru books on the table on the other side of the aisle (flat book table - i should draw piro's hand holding the 'sketchbook' he was pricing)
he's not walking. he's browsing, leaning over to lift something off the table
having to explain it is not good. i'll tweak the image so its clearer