My Hero Academia: Hell is a Mess

Soulmates

Prompt: YEP! WE ARE DOING SOULMATES, FUCKERS! I'm doing this as I see so many soulmate AUs, but all of them are romantic. I want some family love!
Notes because Soulmate AUs vary:
1. Soulmates are not just romantic. They can be familial or friend-status. I'm stating that here before you bitches assume shit. Soulmates are based on who you will be closet to.
2. Soulmates are determined by a matching mark. Because I am uncreative AF, they will just be shapes or plants (not that this will be important.) The mark glows the other person's hair color if they are using a quirk or when the person is touched by their soulmate. Otherwise, they are just black kind of like a tattoo. Soul marks appear once both of them are alive.
3. Depending on how close they are, it can have different effects. Some can talk to each other through minds. Some have the 'connection.' Some get no benefits because FUCK YOU.
4. There is a noncanon ship here. I have no idea how I am running the story otherwise.
5. This takes place when Izuku is 12, so a little bit after he's starting to drink, but before Shouta is in his life.
6. This is in Shouta's POV so he can JUDGE.
That's everything, so let's go!

Warning: It might be bad. Rephrase, it is.

---

Shouta's POV

I don't know why I bother to sleep anymore.

I was attempting to sleep when Nemuri bursts into the staff room, "Zashi! Sho!"

Hizashi was working, but that 's gone now, "Nem! What's up?"

"Are you two available tonight?"

"Of course!"

"No," I state bluntly. I don't want to get involved in whatever they are planning. Anything involving those two is a mess. It doesn't help that those two are soulmates as siblings/best friends, so it makes the situation worst.

"Sho's is too! He has no patrols tonight! What's up?"

Nemuri smiles, " Well, I want to introduce my soulmate and bestie to my new girlfriend! She's offering dinner tonight, and she wants me to bring over some friends. She loves company, so she would enjoy you two!"

"I don't mind going! Come on, please, Sho?!" Hizashi begs as he gets too close to me.

I sigh, "Fine. When?"

"After we finish our work for school?" Nemuri asks. Hizashi excitably agrees while I reluctantly do so.

Hopefully, the girlfriend is saner than Nemuri.

---

As we near our location, it's now when Nemuri decides to illogically inform us,

"Oh, something I haven't mentioned yet is that she has a son." I can't help but wonder if Nemuri knows what kind of situation she is getting into here. Not only will she be a girlfriend, but she has to mature to become a mother to the kid as well.

Her problem, not mine.

However, that seems to hype Hizashi up, "Really?! How old?"

"He's twelve." That's older than I was expecting. I was expecting a little kid. Not a preteen.

"Really?"

"Yep. He's a good kid, but he is troublesome. I'm just warning you now because there might be some arguing. Or he might not be there at all. It's just who he is."

"Against you? Did you fuck up that relationship already?!"

"No no no! I get along with him great actually. I can't really describe him if I may be honest. You'll know what I mean if you meet him. You'll love him, Zashi. Sho will hate him, though."