Contrary to his appearance, Daisuke is rather calm and reserved, especially in comparison to the more cheerful and enthusiastic Kou, though he does tend to be blunt and irritable. His fear of failure causes him to not put his full effort into anything, though this ultimately changes through the interactions with the protagonist.

After breaking up with his initial girlfriend, Daisuke no longer shows interest in girls throughout his Social Link. He tends to either ignore girls or is very annoyed with them.