Be Careful Now (SKK) (BSDxMHA)

Yokohama is a closed off society from the rest of the world.
Many rumors spiral around, the most common being that it's filled with quirkless people, the second most common being that it's a society run by villains.
Not many besides the pro heroes know this, but it's somewhat understood that, instead of quirks, some people in Yokohama possess something stronger... Abilities.
What will happen when the famous 'Double Black' gets sent on a mission to take out the LOV and Pro Heroes-the entire hero society and system-all because of Mori and his plans to become insanely powerful not just physically but government wise?
Read to find out!!
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So as stated this is a BSD x MHA!! It's heavily inspired by this one ao3 fic called 'When We're Together (I'm not afraid of my tears)' by Must_have_been_the_wind
This MIGHT have slight smut, but otherwise it's mostly fluffy and angsty
Obviously this will have Chuuya X Dazai
I swear I ain't copying, but I'll take some ideas and make them more original
I probably shouldn't make another fic but since im stupid anyway I will.
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Some of my headcanons (possibly upsetting, might be canon idfk, not all will be shown in this fic, some might be implied):
- Mori gr00med Dazai/was a perv and still is towards Elise in the future (was also a perv to Yosano)
- Dazai has $H scars on his arms (given the bandages and long sleeved clothing).
- Dazai picks off other people's food so people think he's a pig who likes to eat everyone's food, but he doesn't eat full meals himself unless it's Chuuya's cooking.
- Dazai will sometimes go non verbal due to overstimulation
- Chuuya's fatal flaw is loyalty.
- Chuuya basically has a sixth sense for Dazai being an idiot.
- Sometimes Chuuya will let Dazai draw on him for fun.
- Chuuya always had rlly long hair. When he was in the sheep his hair was past his collarbone. He grew out his hair because of the saying 'hair holds memories' that Koyo told him.