Nobody was home ( he was the one who had left the door open )

Natsu passed the door, expecting to see a pink haired guy sitting on his ... Lucy's white sofa along with a blue cat, angry or maybe even embaraqssed to have found himself ... herself in such a situation. Instead, the living room was as empty as he had left it just 10 minutes ealier : clean and very tidy, with a sweet perfume filling the space around him . Yet empty. Natsu figured out that Lucy hadn't acted has he had predicted : maybe she was still at Fairy Tail's, asleep as she was in her own body. Or maybe she had run away in fear towards Natsu's house. Either way, he hoped she hadn't revealed their little swap to everyone: he still wanted to paly a good prank to everyone, Happy included.

Natsu closed the door behind is back and fell on the sofa, wondering what he could have done now. He already knew everything there was to know about to Lucy thanks to his breaks into her apartment - which now seemed more like to be his - , exception made for the only secret the Blond Fairy had managed to keep still a secret : the manuscript she had been writing for more than a year, ever since hse had left the Heartphilia Mansion. He intuitively knew that it was hidden inside a secret box on the bottom side of her desk .

Overpowered by curiosity, Natsu got up and walked towards the desk , awkardly removing his new blond hair from his eyes. He bowed under the desk , where he could clearly see a wooden box beside one of the legs of the wooden table. He was about to open the bo and unmask Lucy's last secret, when a chill of regret come down his spine . "How would I feel if I knew that Lucy right now is tearing apart or selling my mission souvenirs ? " he thought to himself. His new polish dainty hand stopped at mid-air.