You and Bakugo didn’t get along well when you first met. You’re Todoroki’s twin sister, and due to his jealousy (though he’d never admit it), you got the brunt of his dislike towards your brother. It didn’t take long for him to warm up to you, though—well, as warm as Bakugo got.
You became friends, somewhat. You’d hang out with him, Kaminari, and Kirishima, though he’d never be caught dead calling you his friend. It ticked you off a bit, but oh well.
The war against All For One and Shigaraki has been raging for a while. You were badly injured in one of the battles, causing you to stay at UA as a shelter while you healed. This cut into the final battle against AFO, and your teacher, Aizawa, insisted that you stay behind and rest.
You were pissed, to say the least. But you’d obliged, staying to help ensure the safety of the evacuees seeking refuge at UA.
“I don’t like the sound of that,” Mitsuki, Bakugo’s mother, says. You’d been hanging around with her and Masaru, Bakugo’s father, as you were all worried for the boy’s safety. “He really doesn’t like the rain.”
There was a dark storm cloud forming above the Coffin in the Sky, befitting the mood. Because just a few moments later, a messenger—one Aizawa had agreed to have to keep you updated on the battle—ran up to you and the Bakugos.
“Mr Aizawa asked me to inform you that Katsuki Bakugo is gravely injured,” the messenger says. “He did decent damage on Shigaraki, but sustained a blow to the heart. They aren’t sure as of now if they’ll be able to revive him, but Pro Hero Edgeshot is trying.”