I'ma RP as Law since he's got a backstory perfectly suited for this.
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Law and his companion(I'ma refer to you as Isabella from here) were sitting in his makeshift boat, slowly floating along the sea. Suddenly, the water became very calm, dark and murky. An ominous mist had settled around them. Law was sitting with his arms sprawled across the edge of the boat and his nodachi beside him. He squinted his eyes as the mist came out of seemingly nowhere. He hadn't even noticed it up above them before. "Where exactly are we going?" Law asks. Suddenly, a large macaw came down from above, using its wings to suspend itself right above Isabella's head. "See you at the top!" she suddenly cries out. "What?" Law says, sitting up as the bird wrapped its feet gently around her shoulders and lifted her from the boat. Law grabbed his sword and stood up. "Oi, what the **** are you doing?" His words falling on deaf ears, the large bird carried Isabella off into the mist, out of Law's sight. He angrily grit his teeth in a grimace and dropped his sword onto the floor of the boat. He sat back down and clasped his hands together, his elbows resting on his knees. "Alright, calm down. I think I saw some kind of plateau up ahead. All I have to do is-" His train of thought was suddenly broke by loud screaming. He looked up, surprised, and peered around into the mist. To his utter shock, he began to see forms in the mist. "What the-" He saw a little girl running. His eyes widened as he realized she had white spots all over her body. The same way the people in Flevance did. Suddenly, she fell forward, several kunai lodged in her back. Law stumbled backwards as more and more children appeared inside of the mist. One by one, they all fell down, kunai lodged into their backs, their white-marked skin tearing and blood pouring out. Law turned around as he heard more screams behind them, seeing the ninja force that had exterminated his friends and family set other people on fire, the same as that tragic day. He gritted his teeth again. "Stop it!" he yelled, as though the forms in the mist could hear him. The wood on the boat started creaking. Law turned around quickly, his eyes widening in utter terror and his jaw dropped. He saw his sister, Lami, walking towards him feebly. "Help...me...Law-san...", her frail voice echoed through the mist. Law stepped back, terrified of what he was witnessing. Lami coughed, and fell down. Law dived instinctively to catch her, but as her head touched his arms, she dissolved into a wisp of mist, disappearing into the air. Law then cried out as the visions of those he once knew continued to appear around him and fall as they once did before, struck down by the invisible forces of his memories.
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Law and his companion(I'ma refer to you as Isabella from here) were sitting in his makeshift boat, slowly floating along the sea. Suddenly, the water became very calm, dark and murky. An ominous mist had settled around them. Law was sitting with his arms sprawled across the edge of the boat and his nodachi beside him. He squinted his eyes as the mist came out of seemingly nowhere. He hadn't even noticed it up above them before. "Where exactly are we going?" Law asks. Suddenly, a large macaw came down from above, using its wings to suspend itself right above Isabella's head. "See you at the top!" she suddenly cries out. "What?" Law says, sitting up as the bird wrapped its feet gently around her shoulders and lifted her from the boat. Law grabbed his sword and stood up. "Oi, what the **** are you doing?" His words falling on deaf ears, the large bird carried Isabella off into the mist, out of Law's sight. He angrily grit his teeth in a grimace and dropped his sword onto the floor of the boat. He sat back down and clasped his hands together, his elbows resting on his knees. "Alright, calm down. I think I saw some kind of plateau up ahead. All I have to do is-" His train of thought was suddenly broke by loud screaming. He looked up, surprised, and peered around into the mist. To his utter shock, he began to see forms in the mist. "What the-" He saw a little girl running. His eyes widened as he realized she had white spots all over her body. The same way the people in Flevance did. Suddenly, she fell forward, several kunai lodged in her back. Law stumbled backwards as more and more children appeared inside of the mist. One by one, they all fell down, kunai lodged into their backs, their white-marked skin tearing and blood pouring out. Law turned around as he heard more screams behind them, seeing the ninja force that had exterminated his friends and family set other people on fire, the same as that tragic day. He gritted his teeth again. "Stop it!" he yelled, as though the forms in the mist could hear him. The wood on the boat started creaking. Law turned around quickly, his eyes widening in utter terror and his jaw dropped. He saw his sister, Lami, walking towards him feebly. "Help...me...Law-san...", her frail voice echoed through the mist. Law stepped back, terrified of what he was witnessing. Lami coughed, and fell down. Law dived instinctively to catch her, but as her head touched his arms, she dissolved into a wisp of mist, disappearing into the air. Law then cried out as the visions of those he once knew continued to appear around him and fall as they once did before, struck down by the invisible forces of his memories.