Reina Todoroki is Shoto’s slightly younger twin sister and they begin their first day at U A together. Reina has always been very shy and soft spoken, so the busy atmosphere of the school overwhelms her quickly. She stays close to Shoto almost the entire time, often hiding behind his shoulder when new people try to talk to her. Holding his hand helps her stay calm and he lets her do it without question since it is something she has done since they were very young.