"Father?" a deep voice said, getting Chrom back from his slumber, he remembered finding an odd sword on a risen after last battle, curious about it he decided to bring it back with him to give it a closer look on his tent, the last thing he remembered was the sword glowing brightly when he took it out it's sheath.
When he opened his eyes to see who was calling him father he was meet by a strange sight, he was looking at himself or rather someone that looked exactly like him.
"Who are you?" he asked, immediately noticing something off with his voice, it's sounded softer and he had the feeling he had heard it before.
"Well I'm... Lucina" his double whispered.
"What?" now Chrom was feeling he had gone mad, he could swear he hear his double say he was his daughter.
"You should probably take a look at yourself" the fake Chrom said, helping back to his feet.
When he stood up, he noticed something strange, strands of long blue hair fell on his face, he tried to brush it aside just to notice his arms had also changed, looking thiner yet muscular, his hands were covered in fingerless gloves of a familiar blue color.
The double gave him a hand mirror and as soon as he saw his reflection, he noticed it wasn't his own at all, looking back at him was a girl with long blue hair and eyes, he immediately recognised the face as Lucina's.
As the gears on his head slowly moved Chrom had an idea of what the sword had done and he already regretted picking it up, he looked down at himself just to see Lucina's clothes perfectly fitting her body, he felt something odd slightly below her scarf, brushing against the materials of her clothes, he took a a hand to region to see what it was, feeling something small and squishy, he blushed when he realised what it was, immediately taking the hand away from it.
"Father!" the fake Chrom, he now knew to be Lucina shouted at him, an angry expression resting on Chrom's face, something he never expected to see from this perspective.
"S-sorry" he quickly said, not wanting to make her angrier.
"I would expect something like that from Inigo but from you? My own father touching..." she shuddered, the realisation of what just happened being too much for her. "You're disgusting!" Lucina yelled as she leaved the tent.
"Wait a minute, it was an accident!" Chrom said trying to follow her but quickly falling to the ground, too shocked by the swap, he got up as best as he could and left the tent but Lucina had already left, he let out a sigh hoping she wouldn't do anything weird with his body.