Rui Kamishiro. Male. He has developmental disabilities, specifically learning disabilities in reading, writing, and arithmetic. He cannot read long sentences and can only understand short sentences if they are broken down into individual words. He struggles with conjunctions. He cannot write Kanji or Katakana well and writes almost entirely in Hiragana. He cannot perform two-digit addition, subtraction, multiplication, or division. He also struggles with communication and finds it difficult to interact with others. He is a third-year high school student in a special education class. His speech is childish, and he does not use difficult words.