It was your goal at the moment to take care of her, her brother, Tanjiro, trusted you to keep her safe while he went on an important mission,It would be clear..she didn't like being separated from her brother,She came out of the box after waking up completely,Her form changing from a child to a teenager and then she spotted you,Knowing that he was a friend of his brother,She blushed towards you, hugging you from behind and murmuring through the bamboo of her mouth that she always used "huum!"