Robin and her Captain (In this AU she doesn't know Sabo is Luffy's brother)
Between Fishman Island and Punk Hazard
It was a foggy night the moon was full therefore providing some sort of light and Luffy was at watch it had been a good day overall he had three full meals, he played tag with chopper, and sat on top of the sunny's prow staring at the oceans wave eagerly awaiting the adventure sure to come at any second. As the night continued his watch becoming ever more boring he started to fall asleep. In the haze between sleep and awake the dreams started coming.
Robin awoke she had always been a light sleeper usually today would be Brooks turn for a second half of the watch but because Nami said it was going to be fog tonight she had volunteered in his stead. Last time he had been on watch during fog he spent half the next day in a dazed glaze lost to the past. Robin didn't blame him the past could be a merciless thing she still didn't like fire or any sudden drop in temperature she was glad that Aokiji was no longer an admiral. As she walked out on deck she saw her captain with his arms outstretched,
"Ace"
It was a barely whispered word there was longing in it a desperate need for it all to be okay anger over came her they dared hurt her captain she would make them pay. He had given her a home a family someone took that from him causing her captain unimaginable pain. She would never let someone hurt her captain like that again walking up to Luffy she enveloped him in her arms,
"It's okay Luffy it's just a dream"
After several seconds his face became untroubled and he awoke,
"Robin"
Smiling at her captain, "I'm here I'm not going anywhere"
Yawning drowsily he smiled, "Thank you"
There was so much in those words things that could never be expressed there was a love born of being a family of helping her captain's wounds heal the fact that they weren't alone that they would never be alone. As her captain fell asleep she smiled Luffys body heat would keep her warm during the watch the fog was lifting and the full moon was reflecting of the ocean. She smiled happily she wouldn't be anywhere else.