One Piece Chapter 27, page 15-16: The Plot

Usopp releases the shot, yelling, "Shoot..." and hits the second guard square in the face. The guard groans, "Argh!!" and collapses to the ground. Kaya is horrified, screaming, "Usopp-san! Stop it!!" She looks out the window and gasps, "What happened? Both guards are... This isn't the Usopp-san that I used to know..." Usopp, standing over the defeated guards, pleads with her one last time: "Kaya! Please believe me! Hurry and leave this village! Before the butler comes back!

Desperate, Usopp reaches out and grabs Kaya's arm, saying, "Then I'll have to make you come with me by force!" Kaya screams, "Ahh! No! Let me go!" Just then, the angry villagers arrive at the mansion gates, shouting, "Look! There's Usopp! He's at the mansion." Usopp panics, realizing his time is up: "Damn! It's the villagers!" He turns back to Kaya, begging, "I'm not lying! Everything I've said is the truth! Please believe what I'm telling you!" In response, Kaya slaps him hard across the face. The slap makes a loud sound, leaving everyone, including Merry who has just arrived, in complete shock. The villagers yell from the gate, "Stupid brat! We won't let you get away this time!