Mitsuki x Reader (Rin)

The stranger

"Who the hell is she," I asked Mitsuki. He was super nervous, he kept looking around. And started telling me about her.
"Her name is Kimmi she's from the hidden sound village, she and I used to be in love, in fact she asked me to be her boyfriend before we left, at first I said no because I was leaving, but when she asked to leave with me, I saw her for what she was. A poisonous person, she was trying to ruin my life, she was trying to keep me anchored to my past," he rubbed his back, I sat down on a bench, he sat on my lap and kept talking about her. "She was extremely skilled, at least jonin level, she might be anbu at this point, I'm not sure, but the one thing I know is that she's bad news, and the fact that you answered the door is very bad, it means that she knows someone close to me over here, we're gonna have to stay close together". I started to get really scared. "I think I can take care of myself," I said Mitsuki, kinda nervously, afraid that he was going to say that I wasn't. "You are, but she's extremely smart and she has such a unique ability, I don't think that you'd be able to beat her. "Well what's her ability?" I asked him looking deep into his eyes, they were glowing slightly, a sign that he was nervous. I held his hand and kissed him on his cheek. He moaned a little bit and said "thanks, I needed that," and he kissed me back. "So um what are we gonna do, I mean, she's still out there, and if she's as dangerous as you say she is, then we're screwed," I said to him, as he held my hand. He squeezed it a little and said "use your scorch style, and make her flee the house, it's okay, the house is fireproof, we'll just have to refil all the things that need water," he said to me, he held me close and whispered in my ear "go absolutely crazy, make sure she gets the hell out of this house". I walked up the stairs and started to charge up my chakra again. This time, I wasn't going to hold back, I needed to end this here and now.

I finished infusing chakra, and I let loose all of my scorch style, the toxic flames ran through the halls, and the flames engulfed the living areas, and flew out the exits, the windows shattered and flames licked the side of the building. They burst out the sides and blew the door off its hinges. The windows shattered and the toxic flames billowed out the house. After that I colapsed onto the floor. I was breathing heavily. Someone's footsteps came from behind me. I turned around, and saw the same girl from before walking up behind me. "That hurt, you jerk," she picked me up by my collar. "I'm gonna make you pay for that," her eyes widened and she held out her hand. She moved it slowly towards my face, it started to glow and energy started to spark off of it. " I'm gonna cut you in two," she said, she said, she thrust her hand foreward, when I moved out of the way and planted my foot onto her face. She staggered back and her glowing hand and slammed down onto the ground. The floor cracked and went along the length of the house, she lay on the ground and stood back up and then ran off into the distance. "What the hell was that," I asked Mitsuki. "That was her kekkei toutua, it's called celestial arsenal, that was her dagger, it's the weakest one out of them". I gulped, that was the weakest one, and it ripped a hole through the house.