Kazuki got forced to marry dabi for the mission from the UA to know there mission and plans but he accidentally fall in love to him,so he hide his feelings from the UA so and he hide his feelings from dabi and his mission..and dabi always flirt at him and teasing him but dabi already know deep inside that kazuki is hiding his feelings..and know his moves in act because he know that kazuki got forced to do the mission..but dabi didn't tell him..that he know his moves and interests..