Shion is a rather quiet person and rarely talks. However, whenever talking about music he always mentions how "fate is written in the stars." He is extremely dedicated to HE★VENS. He is very hard on himself, as he believes he has to do anything to prove that he is a valuable member of the group, and responds to stressful situations by having emotional breakdowns. He was the last person to join HE★VENS and had issues with opening up to the other members. He eventually let down his guard and openly smiles and jokes around with everyone. He seems to be the closest to Nagi.