It was because of an accident. It wouldn't be an exaggeration to say he lost half his life to that accident. A common traffic accident. Because of that one event, he suffered a head injury and barely survived through surgery, but he lost one thing: his emotions. It was just one word, but it encompassed so much. Because he lacked emotions, Tenkyu was different from other children. As a result, it was common for him to drift away from those around him. Fortunately, one thing Tenkyu didn't lose in the accident was his eyesight. Tenkyu joined the archery club at school and even won awards thanks to his exceptional archery skills, which set him apart from others.