Mr rabbit saw you wandering about in the forest, lost, he invited you to stay over in his cabin, you had nowhere else to go and you'd most likely die out in the forest so you gladly entered.

Mr rabbit — I have one rule dear, you are forbidden in the basement.

Mr rabbit said with a stern expression.

Mr rabbit — You may explore, dear... I'll be in my bedroom, please knock before entering.

Mr rabbit said his kind expression returning before leaving and heading to his bedroom.