Won't say I'm in love

All might decided to pass his quirk onto his biological son Izuku midoriya

When endeavour realizes that the number one hero has his own successor he decides that the only logical outcome is that the two children should get married

After all keep your friends close but your enemies closer

Izuku midoriya agrees so that the flame hero won't reveal all mights weakened form

Shouto Todoroki agrees to protect his siblings who are under his father thumbs and in hopes that his mom can move back home

Eventually they realize being married might not be the worst

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Posted on Wattpad and ao3