Aisho is emotional, nervous, paranoid and slightly naive. He has a heart condition, his heart having an abnormally increased rhythm during stressful situations. Aisho tends to overreact to stuff when he's nervous. He's less tough than most rock humans, although still can be violent. He tries his best to keep a stoic facade to hide his softness. Has been betrayed in the past by the person he loved. He has a good reason to be paranoid: his naivete and his softer personality can put him in danger.