Oooh haven’t done anything for this ship before! Let’s see how it goes! and I’ll stick with gender neutral reader 🙂
It all started with the three of you as just good friends. Todoroki got along with Midoriya, who had this uncanny ability to pull the best out of people
It took a while for Todoroki to realize his feelings for Midoriya went beyond that of just friendship, valuing the time they spent together and how close they got through their time together at UA. He’s dense but blunt, an interesting combination when it came to confessions
Of course Midoriya had had a crush on Todoroki for a while but didn’t want to screw up their friendship (in addition to him being a total blushing and flustered mess about it) so he kept his feelings to himself
You, on the other hand, knew both of them liked each other but you didn’t want to interfere as a third wheel…even though you secretly had crushes on both of them and thought it unwise to put yourself between your two friends
When Todoroki finally told Midoriya how he felt, the boy went as red as Kirishima’s hair. You were happy for them, so you put your own feelings aside
However, as time went on, Todoroki and Midoriya noticed that when they hung out together you seemed distant or decided not to hang out at all, even when it wasn’t a date or anything. Both of them started to miss you and soon realized they’d been so wrapped up in each other that you were like a missing piece of the puzzle
So, after some talking they put forward the idea of sort of…dating each other, as a group. There was a lot of communication on how things would work, but ultimately everyone ended up happy and no one was left out
Midoriya is naturally protective of everyone he cares about. He knows you and Todoroki can take care of yourselves, but he’s not the shy kid he used to be and will stand up to anyone trying to put either of you down
Todoroki has no filter and will freeze anyone who dares say shit pretty much without hesitation. Midoriya tries to calm him down but it rarely works until the perpetrator swears to never be an ass again
All three of you study together, and with Todoroki and Midoriya some of the best students in the class, if you’re ever having trouble they’ll help you out, maybe with chaste kisses as a reward for doing well
Todoroki is loaded because of his father’s hero ranking and honestly gives no shits about using a credit card with Endeavor’s name on it to take his partners out on a date or buy them gifts
Midoriya on the other hand enjoys memorable experiences, so something like a theme park or going somewhere and experiencing memories together were his preferred dates
If Endeavor ever gives Todoroki shit or he’s feeling angry or upset about something his father did, you and Midoriya are right there in case he needs to vent or let off steam or cry on the very rare occasion
Inko pretty much adopts you and Todoroki as her other children knowing how happy the two of you make her son. She knows about Endeavor but never brings it up, and will provide any support he needs when he’s not around his own mom