The Other Todoroki - SLOW UPDATES!

Shina Todoroki is Shoto Todoroki's twin sister, with her being older by 10 minutes. She has very different quirks from her twin, she hides one of her quirks. Her blue fire, just like Touya's. She has Cremation and Red Ice. She hides the Cremation quirk mainly from her father and her brother, she doesn't want to be trained to be better than All Might. She wants to be herself, her own person. She trains it herself so that Endeavor doesn't know. But only a few people know about it, her older sister (Fuyumi), her older brothers (Touya and Natsou), and her mother.
She told Touya that she had a quirk like him but he didn't believe her until she showed him. He told her to keep it hidden, so she did, it has been that way since Touya left. She only showed it in her eyes, the blue fire and a red eye, from training with a sword for some reason she could never remember. She lost it, her gray eye making it turn red.
She thinks it shows her fire and ice, though she never told anyone else besides her mother and her three older siblings. She looks exactly like Shoto but without his scar, which he is jealous of. He doesn't care for his sister, in fact, he barely ever talks to her with her doing something wrong first. Her scar is instead on her leg.
As the two of the Todoroki twins head to U.A., will they both get into the same course or will she be forced to be in Class 1-B without him and be happy, or Class 1-A where she might find heartbreak and betrayal? Will Endeavor, her friends, and her brother ever find out about her secret quirk or will it stay hidden until she's a pro? Does Shoto get rid of his older sister to have been the only baby of the Todoroki family? Will she be a villain? Might Endeavor find out about her brother's 'caring' nature towards her and punish him? Will she ever find Touya, her favorite brother?

!TW!
- Mentions of abuse
- Torture
- Self-harm
- Death
Please do NOT READ if you are uncomfortable with said topics!