Y/n = Your name

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Though why did cross protected y/n? Is he related to her? Did y/n and cross had a connection before?

A lot of questioning thoughts came in nightmares mind making all of his thoughts scattered around. Leaving an unanswered question of his.

Though what was cross related to the girl?

(Cross' pov)

"Now, get the fuck out of my sight before changing my mind." He said as they both nodded and started scrambling off. Running on their separate ways.

"I should go now."  I said as I went off leaving nightmare alone.

'Fucking assholes.' I thought as I went to my room. I shut the door and sat at the edge of my bed. Thinking if she still remembered me.

《~°•°~》Le Flashback 《~°•°~》

Cross sat on his empty Au waiting for his friend ink to come. But he didn't came...cross still waited for him until he suddenly heard a portal open.

Cross turned around expecting his friend to come in his Au. But his expectations quickly died.

He only saw a girl that wears full black outfit with some shades of grey on her t-shirt and pants.

"W-who are you!?" Cross says as he summoned knives at the girl. She froze as she raised her hands in the air.

"Woah there buddy. I came here for peace." The girl says as cross lowered his knives a little.

"Who are you?" The skeleton once again asked the girl.

"My name is y/n l/n." She says as she let a hand out.

"Cross." He says. He was hesitated but held her hand shaking it. The girl smiled. Y/n then let go of cross' hand.

"So cross why are you in here? You waiting for someone?" She asked quite curious.

"Well...yes I am waiting for a certain someone." He replied

"And who might that be?"

"Ink." Cross simply says as the girl y/n nods.

"So wanna greet me with your ghosty pal over there?" Y/n asked as she was pointing it right next to him. Cross looked at the girl shocked.

"How-"

"I can see ghosts or somesort of." She says as cross only nods.

"This is X chara." Cross says as y/n only smiled.

"Well hello X I'm y/n!" Y/n says cheerful in her voice. Chara blushed a bit and smiled.

"Uhh...same for you too y/n." Chara says as y/n only nods.

"So why are you in our Au?" Cross asked looking at the girl.

"Well....long story short I have been exploring or running away from someone." Y/n says in her sly grin.

Cross isn't quite convinced at her explanation but nodded. He snapped his fingers letting the knives disappear.

"So wanna have some chocolat-"

"CHOCOLATE!" Cross burst out smiling widely. Y/n only smiled. She place her hands into her pockets and grabbed a chocolate.

She let out the chocolate letting cross see it. Cross was drooling from the chocolate. Y/n smirked.

"Here." Y/n says as gave him the chocolate.

"CHOCOLATE!!" Cross says as he quickly grabbed it, removing the plastic and started munching it.

"Soo...crossy likes chocolate huh." She says as her smile grew.

After cross finished eating his chocolate he turned to y/n.

"Uhh..yeah? Why?" Cross asked as she smiled behind her mask.

"Oh, nothing. I'll keep that in mind in case I might stumble in your Au or you." She says as she winks at cross. That made his skull all flustered.

"I like it whenever I see your blush. It's cute." She says as cross blushed in a dark purple hue.

"Though I should leave now. But maybe if I came back I might bring you some chocolates on the way." She says as she smiled and waved for goodbye.

He waved back and she left.

Months have passed, cross and the human y/n have been best of friends.

Y/n had gotten a habit of bringing cross some chocolate or tacos, since she found out that he also loves tacos so on the way she goes to underswap stealing some tacos or askig for blueberry sans to make one and giving it to cross but they often share their food at a times.

Cross and X chara got a little used to it at y/n's nicknames on them and sometimes they liked the nicknames she gave to them.

When cross was waiting for y/n to visit again. X Chara suddenly spoke

"Someone's in here." Cross was alarmed from what chara said. Chara isn't talking about y/n nor ink.

It was talking to somebody else that was in here.

"Well hello there." Cross quickly turned around and saw a black goopy skeleton standing infront of him.

"Wh-who are you and what do you want!" Cross asked fearfully as he summoned his large knife and pointed it at him. The goopy skeleton chuckled.

"I am nightmare. The king of Nightmares and I want is you." Nightmare says as that made cross triggered and started to attack nightmare. But...nothing happened. His knife only go pass through him. Making nightmare only chuckle.

"Don't tire yourself out. You know you are quite strong and perfect to be my Teamate so are you joining or your just going to try and kill me. I have my limited patience cross." That made cross stop. He looked at the goopy skeleton or nightmare.

"I-I...i." Cross' words ran out. No words he can find.

"I will let you go in different Au's and letting you make your Au getting build up. And in exchange you'll join to my group." Nightmare says. Cross was hesitant but just sighed.

"Fine. I'll join your group." He says as nightmare smiled.

"Excellent. Now let's go." He says as he snapped his fingers teleporting the two of them in a dark castle.

Cross' only thought was; I hope we'll meet again y/n.

《~°•°~》End of Flashback 《~°•°~》

I sighed remembering the time I forst met her.

"We first met her was a threat though it is quite odd that she looked still happy even if we pointed sharp knives at her." X chara says as I chuckled.

"Yeah. I remembered her expression when I pointed knives at her. She seemed quite excited and happy seeing us." I said to chara as I smiled.

"Though I hope she'll remembered us."
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1061 words

Now you know why cross protected ya reader-chan!

Anyway I hope u enjoyed it bah bye!