Tokiya is a very cool person and considered a perfectionist. Hyuga Ryuya comments that his singing doesn't have 'heart', which makes him frustrated as his singing doesn't seem to improve in the least. He seems cold at the beginning of the series, which may be because he felt guilty about what he was hiding. He was slightly upset that his acting wasn't enough to help Hijirikawa overcome his embracing problem in season 2, since he was considered to be better at it than his companions.
His parents are divorced. His father left him and his mother because of Tokiya's ambition to become an idol.
He struggled to become an idol. After a short period of time, his agent began to push him to do other things instead of sing, which bruised his pride and took him away from his passion.