Formerly perceived as arrogant, dishonest, and selfish, while still kind and caring at heart, Shu was quite a fussy and short-tempered person with a desire for perfection at all times. However, over time he opened up his heart more to those around him. He is an antique doll lover, with a fascination towards all forms of art and European culture. He randomly speaks French sometimes. He really likes fashion, art, and music. He is very proud of his idol unit, Valkyrie, and wants to show true art.