He shows himself

"Sakura! Wait!" Naruto said urgently as he appeared from behind the couch. This time Sakura really did scream. She stifled it quickly though. Naruto turned his head away respectfully.

"Naruto!" Sakura said through embarrassed tears, tripping over herself while backing behind the wall and into the hallway. She fell on her ass with her legs open. She clamped them shut and her humiliation deepened. Her tits uncovered and forgotten as both of Sakura's hands were being used to stabilize her. "What the hell is going on?"

Naruto stuttered his respond, not really wanting to admit he was the one who stripped and brought her here. This was made many time more difficult because he couldn't help but stare directly at his teammates uncovered small breasts. "Well... uh... I... you see..."

Luckily, his response was abandoned as the creak of the stairs told them both someone was coming, and both Naruto and Sakura did not want Sakura to be seen. Sakura climbed back up and dashed out of the hallway and back into the living room, passing Naruto (who couldn't resist looking at her fine backside on the way), and adopted Naruto's hiding place behind the couch. Luckily, it didn't seem as though whoever the newcomer was saw Sakura and a final creak told Naruto they were at the bottom step. Naruto (and Sakura through the gap in the couch) looked back to see who had come downstairs.