He is easily provoked, especially by Dazai’s teasing regarding his height (around 160 cm or 5'3").
Though he is a member of a criminal organization, Chuuya is often seen as more "human" and moral than many of his peers. Nakahara Chuuya (Bungou Stray Dogs)
He can alter the weight of objects, walk on walls, or create localized gravity wells to crush enemies. He is easily provoked, especially by Dazai’s teasing