Warning: HUGE spoiler that will relate to my BBS story! The spoiler's in Hikari's flashback. Read at your own risk.
My Pov
I was helping the ship travel through the space sea carefully. Soon we came to another world. I looked out the window to see it was an underwater world.
"Okay, guys. Prepare for landing." Donald said. What? Had Donald lost his mind!?
"Land where? In the sea? We'll drown!" Sora exclaimed.
"Donald, seriously, how are we suppose to breathe down there?" I asked.
"Not with my magic, we won't. Just leave it to me." Donald said
"Hikari, why don't you try using your own magic? That way you get the hang of using it." Goofy suggested. I guess. Me and Sora first returned Eve and Pikachu. We landed and then dove into the ocean. I opened my eyes to see I was able to breathe. I looked at Sora, Donald and Goofy. Donald had become a squid, Goofy had become a sea turtle and Sora had become a merman. Sora's tail looked like a dolphin in a way. That's when I saw them staring at me.
"What?" I asked.
"You look amazing." Sora said. I saw a rock that was somewhat like a mirror so I swam to it. Or to the best of what I could. I gasped at my reflection. I wore a shimmering pink and orange gradient top with magenta accents and pale pink flowery lace shaped lining at the bottom. On the sides of the waist were lilac and dark orange grading fin-like shapes of cloth, and for the sleeves, it reaches to the elbow, but a part of it is cut-off. The color of it is grading orange to pink with a small blue crystal at the end. Under this layer is a layer of light orange laces. Near the underarm were some blue shells connecting the lilac orange cloth. At the chest was a small light blue to creamy white grading ruffled cloth with a round blue crystal with golden wings spreading out of it, and a small blue droplet crystal also with wings spreading above the cloth. It came with a simple bracelet and a small blue. The whole top has a mermaid pattern. A glittering light blue to emerald grading tail, being mixed shades of creamy white, pink, and orange gradient textures. The front has gold detailing on top shaped like a heart, while the side parts have blue clams on them. The belt of the tail was violet, and there were red gems that dangle from the bottom of the blue part. The fins were the same colors, but much more vibrant and didn't include orange but replaced with yellow. There are some silver vine patterns, silver studs and blue gems and diamonds decorating the wings. On my head was blue-white headband with a white shell in the centre and an emerald-blue gem with some smaller silver pearls in it, and on the sides are pale pink, purple, blue, and orange gradient wings shaped like a swan crown. Also came with red droplet diamond earrings with blue cloths behind it. I still wore my Wayfinder, but it had shrunk down to the size of a small seashell(Look at Aikatsu; Mermaid Pisces Coord).
"Wow..." That's when I felt something tap my back. I turned to see a Heartless. I was about to summon my Keyblade when I notice the emblem on it's head wasn't the same. It was the Kingdom Hearts emblem. "Shadow, is that you?" I asked. The Heartless nodded. She had gone through an appearance change too. She had a number of small bluish-green tentacles dangling beneath her. She also has two massive pale blue ones in the front that could allow her to deal large amounts of damage with her attacks. She had a light grayish-blue transparent head and hidden behind the emblem there were other Heartless visages, complete with a crooked, toothy smile, bright yellow eyes, and a medium-length plume that ends in a spiral(Shadow basically became a Sea Neon).
"So, Shadow changed too?" Sora asked.
"I guess so." I said. I decided to let Sirena out, so she could swim. "Sirena, come out!" She first appeared in a crystal silhouette then appeared in her physical form. We all started swimming to try and adjust to our appearance change. That when I saw another mermaid headed this way. Behind her was a crab and a guppy.
"Come on, Sebastian!" the mermaid cried. The crab, who I guessed to be Sebastian, was helplessly trashing in the water trying to keep up.
"Ariel, wait! Slow down! Don't leave me behind!" Sebastian yelled, swimming up to Donald and freaking out. He and the guppy hid behind Ariel.
"Relax, Sebastian. They don't look like one of them. Even the one hiding behind the girl." Ariel said. That's when I saw Shadow had hidden behind me and one of her tentacles was wrapped around my arm. "Right, Flounder?"
"I don't know. There's something weird about them." Flounder said.
"What do you mean?" Sora asked, nervously. Ariel swam around both of us.
"They do seem... a little different. Where are you from?" Ariel asked.
"We're from kind of far away. And we're not really use to these waters." Sora lied. There's no way she'd buy that!
"Oh, I see." She actually believed it? Oh, well. "In that case... Sebastian can show you how we swim around here." Ariel said.
"Ariel, King Triton will not like this!" Sebastian exclaimed.
"Oh, don't worry." Ariel said. It took a little practice, but soon, we all got it. Shadow even looked like she was enjoying herself. Sirena of course, had no problem and was absolutely enjoying herself.
"Good job. Now let's move on to self-defense." Sebastian said.
"Sebastian!" Ariel cried. She pointed at the way they came and Heartless were swimming this way.
"Class is over! Good luck!" Sebastian exclaimed. Ariel, Sebastian and Flounder hid while the rest of us fought the Heartless. Shadow and Sirena were helping too. It was great to see them helping us out more. I always wondered why Shadow would hide in my shadow. Sebastian was afraid that the Heartless were heading for the palace, so we followed the trident sign on the rocks until we came to a beautiful underwater castle. Unfortunately, Heartless were swarming in the courtyard. We swam to the palace and into the throne room. The Heartless were right behind us. That's when a gold beam of energy hit the Heartless and destroyed them.
That was too close." voice boomed. We turned to see King Triton. "As long as I have the trident, I will not tolerate those creatures in this place." I made sure to keep Shadow behind me and hoped he won't see her. Sirena also hid behind me, but made sure to keep Shadow hidden.
"Daddy!" Ariel exclaimed. King Triton was Ariel's father? That means she's a princess!
"Oh, Ariel! When will you listen? It's dangerous out there! Strange creatures lurk outside." King Triton said. He looked over to us as he said this. He knew we weren't from here. I could see it in his eyes.
"Behold. You swim before you ruler of the seas: His Majesty, King Triton." Sebastian proclaimed.
"And who are they?" Triton asked.
"They helped us fight off those creatures." Ariel said.
"They don't look familiar." Triton said.
"We're from an ocean very far away." I said.
"Yup. We came to find the Keyhole." Goofy said without thinking. Goofy!
"The what?" Triton asked.
"What's that?" Ariel asked.
"Well, it's a-" Goofy began. King Triton slammed his fist down. Shadow jumped and the tentacle's grip on my arm tightened a little. Sirena shrank behind me even more.
"There's no such thing. Certainly not here." Triton said. He was lying. I could sense there was a Keyhole here. Wait, I could I... Oh yeah. Princess of Kingdom Hearts.
"But, Daddy..." Ariel said, but was cut off by her father.
"Ariel, not another word! You are not to leave the palace. Is that clear?" Triton asked. Ariel got angry and swam out of the throne room. We followed after her. His strictness reminded me of someone. Another memory flashed through my head. 'I was five and a man with black hair tied into a short, high topknot, with one bang falling off to the right side of his face was hunched over, hugging me and crying.
"Please forgive Hikari. I told myself it was to protect you, but all my neglectfulness toward you only caused you the worst kind of hurt." the man pleaded.
"It's okay. I understand why you were pushing me away and I forgive you." I looked up and wiped the tears that I hadn't realized had formed from my eyes.
"Thank you. I swear to you this, I will no longer distance myself from you. I promised your mother I would protect you." the man told me.
"What was she like?" I asked.
"I'll tell you when you're a little older Hikari. Let's get you to your room. I can tell you have had a tiring journey." the man said. I rubbed one of my eyes. I took hold of his hand and we walked away.
"I'm holding you to your word, Daddy." I said. Daddy? That man was my father?
"Hikari!" Sora exclaimed. I snapped out of my daze and looked at Sora. "Come on." I followed after my friend. Finally, I remember my dad's face, but not his name.