Please Believe Me. Kirishima x oc (unfinished)

Chapter 10

The day after Mizuki and Itsuki's argument, Inko came home from work with a few bags. Thinking it was just groceries, Mizuki and Izuku helped Inko with the bags as Itsuki sat in his room texting his boyfriend. Inko told Mizuki and Izuku to set the bags down in the kitchen, and she would be there on a minute.

A few minutes passed and Mizuki grew curious of what was in the bags. She started to move her hand towards it only for Izuku to shoo it away sending her a slight glare. Mizuki of course returned the glare and took her hand back.

Inko entered the kitchen, took the bags, then put them on the table. She looked inside the bags as if making sure certain things were in certain bags. Inko turned back around one bag in each hand. She pushed her hands forward, one bag extended towards Mizuki, the other to Izuku.

"Open it." Inko said excitedly.

Mizuki pulled a box out from the plastic bag and started trying to cut through the tape. Once she was able to rip the tape she opened the box excitedly and saw some tissue paper. Mizuki unfolded the tissue paper and saw a small belt looking object with small flat metal strapped to it. She slid one of the flat medal pieces out and saw a small, smoothed in button. With her hand on the side the metal, she pressed the button and out shot a small blade on both sides that she soon realized were retractable knifes on what she called a 'thigh belt'. Mizuki had the biggest smile on her face as she slowly looked up towards Inko.

"You didn't."

"Oh I so did." Inko responded quickly.

Mizuki put the box to the side as she leaped off the counter she was sitting on and hugged Inko tightly while repeating, "Thank you, thank you, thank you, thank you, thank you! " extremely fast.

Inko hugged her back and said "You're so welcome! I'm so proud of you! I'm just sorry I couldn't get you a full costume like I did for Izuku."

"It's ok because this is perfect." Mizuki said happily.

Mizuki strutted into her room wearing the thigh belt on, well, her thigh. She was so happy.

At Katsuki's house...

"So let me get this straight, Itsuki and Deku got in and you got a total of 71 points? I don't like how close that is to my score..." Katsuki said talking to Mizuki about U.A. high.

"What was your score?" Mizuki asked curiously.

"Why do you need to know?"

"I don't need to know, I just want to."

Katsuki huffed. "77..."

"Damn. Talk about cutting it close." Mizuki responded. "Oh and I don't know if I told you yet, but I need to vent to someone with an outside perspective."

Katsuki nodded.

"So I got into a fight with Itsuki."

"Wow a fight with both brothers. That must be awkward at dinner."

"It is, and actually eating diner together will almost always end up in another fight. But that's not my point." Mizuki paused taking a deep breath before continuing. "He's mad at me because I didn't want Izuku to go to the same school as me. I was mad that he got in. At least I think I was mad. I think that deep down I might actually proud of him. Like really proud. And he tried to apologize but I just yelled at him. My best friend- no my brother. I didn't even give him a chance. But I also don't think I'm ready to forgive him yet." Mizuki spoke fast as she began to cry.

Later that day...

"Itsuki... Itsuki..." Mizuki paused to take a deep breath before yelling, "Itsuki!".

"What!? What do you want!?" Itsuki yelled pulling his headset off as he jumped from his chair turning to look at a slightly startled Mizuki.

"I want you to talk to me." Mizuki smiled as if nothing happened.

"Pft likely..." Itsuki turned and plopped back down in his chair and putting his headset back on before continuing his game.

Mizuki walked over to his chair and snatched his headset right off his head.

"Why won't you talk to me?" Mizuki asked in a hash tone.

Itsuki stayed quiet but tried to reach for the headset.

"Nah uh." Mizuki pulled them away from him and pined them to the ceiling using her quirk.

Mizuki grabbed Itsuki's hand and pulled him down to his bed.

"Itsuki... why are you ignoring me?" Mizuki pleaded.

Itsuki stared at his sister.

"Itsuki please... what do you want me to say?"

Itsuki hesitated slightly. "I want you to apologize to Izuku."

Mizuki released his hands.

"What do you want me to apologize for? I'm not the one on the wrong, Izuku is. Do you know what he said to me? He said I was a pain in his ass and that he wished he'd never met me." Mizuki said in a dangerous tone that Itsuki knew all to well.

"You know what, that's not what I meant-"

Itsuki was cut off when Mizuki threw a knife at his bedroom window. The glass shattered. Mizuki grabbed her knife and jumped out the broken window before she could hurt Itsuki again.

When Mizuki was almost at the ground, she activated her quirk ever so slightly so she wouldn't get extremely hurt. Mizuki sprinted to the forest knowing no one would be there (considering it's private property). She went to the tree in the middle of the forest. It was a tree that she beat up every time this happened. Now you might be wondering 'What's going on? Why did she jump out the window? What did she do to Itsuki?' All are valid questions. The answers to these questions are complicated.

Here are the answers:

Question 1, what's going on?: When Mizuki gets overwhelmed, sometimes she will use her quirk without meaning to and possibly hurt the people around her.
Question 2, why did she jump out the window?: She didn't want to hurt Itsuki.
Question 3, what did she do to Itsuki?: When Mizuki was around 7 and trying to learn how to use her quirk, she got pissed off and threw a dart at him. Luckily it was just mental pain, but it still hurt him a lot.

In order to get her anger out without hurting anyone she will go to this tree and beat it up. It was the safest way to release her anger. Sometimes since her quirk is so powerful it will overwhelm her and she needs to release some of the energy she produces.

Mizuki kicked at the tree with mass amounts of energy covering her leg. She continuously kicked trying to wear herself out. It wasn't working. She threw a few knifes, filling them to the brim with electricity throwing them at the tree. Around 37 knifes latter, Mizuki finally wore herself out.

"Damn..." Mizuki whispered to herself, out of breath.

Mizuki lied down on the soft grassy/dirty forest ground trying to catch her breath. She was exhausted and felt her fingers start to go numb. Mizuki moved her fingers continuously, trying to stop the feeling from spreading to the rest of her arm.

Knowing it probably wouldn't go away anytime soon, Mizuki made sure she had all her knifes on her belt, then walked back to her house.