Hayato  

David was assigned as Yumis pilot and soon developed a crush on her. Despite having the courage to express his feelings, he couldn't tell her because she was too busy with the "White Tekkaman." Meanwhile, David teased him relentlessly about his infatuation. When his love was threatened, Yumi remained indifferent due to her preoccupation with the "White Tekkaman," and David continued to torment him passionately. Despite this, Yumis loyalty to him was absolute.