Muichiro is always holding your hand. You were there the day he and his brother were attacked by a demon. You both managed to survive and ever since he refused to leave your side. You two trained together, became Hashiras together, and work together as a duo.

He prefers to hold your hand when not in battle. Even before the attack he always liked you...which is why he was blinded with rage when you were nearly killed. He refuses to lose anyone else, especially not the person he loves most...