(Hello just trying out the advice I got from LxrdAccxlxrxtxr this is just a practice chapter but If you want to include this to the story you can say it in the comments thanks)
After the Heroes vs Villain activity, they were tired so they came to the dorms right after. They got to the dorms they ate their dinner and got to their own rooms and slept
Accelerator's POV
Shinzai came to Accelerator room to talk about what happened while she and misaka were battling it out
Accelerator: Well I think it was good you apologize to her if I were you that's a mission success but what do you think about the situation you in right now?
Shinzai: I don't how to feel well I feel relieved about it but.....I don't feel like it was the right time to apologize I should probably apologize to her again on another day just incase
There was silence for a few seconds
Accelerator: Do what you want Shin it's not like I decide your life or anything
Shinzai: Yeah thank you for talking to me onii-chan
Accelerator feels uncomfortable hearing those words from a different voice rather than last order's voice. But I was her sister so he lets it slide
Accelerator: (Sighs) Yeah yeah go to your room it's getting late now
Shinzai: Oh yeah your right I will be going now goodnight onii-chan
Accelerator: Goodnight to you too(Yawns)
Accelerator lays down in the bed besides last order he looks at her and sleeps
Misaki POV
She was in her room hugging a pillow in her face and screaming into it
Misaki: (Mind) Why did Accel does that to me did he just do that to tease me or is there something else
When she thinks about it more-more and more she starts to blush about what she was thinking
Misaki: (Mind) Get it together Misaki it's Accel we are talking about he wouldn't care about romance and dating...........right?
She finally cleared her mind and went to sleep
The next day
Accelerator wakes up at 6:30 in the morning he stands up from his bed and goes to their private bathrooms(If I didn't mention in the previous chapter well they are included now). He goes in and shower and goes to check his phone
Accelerator: Its Saturday cool (Yawns)
Accelerator goes to his bed and wakes up last order
Accelerator: Hey brat wake up it's the weekend
Last order: just 5 more minutes(Yawns) says misaka misaka clearly wanting more sleep
Accelerator: Brat just wake up or I will throw you weird frog creature toys in the incinerator
Last order suddenly jumps off the bed
Last order: please no I'm begging you I woke up now so please don't throw them away says misaka misaka begging onii-chan
Accelerator: Good now let's eat downstairs and go shower first
Last order: Ok says misaka misaka agreeing
Last order then wash showers and goes downstairs with Accelerator they see Sogiita, Momo, and Shoto talking
Accelerator ignores them for now and goes to the dorm vending machine buying 5 cans of coffee and buying udon noodles with last order also buying udon noodles
