Kokushibo (you are Douma) takes care of you :>

You and Kokushibo could be considered close friends, but there is a huge difference: you are very energetic, mischievous, and stubborn, while Kokushibo is calm and serious. He told you several times not to touch Muzan's potions because they could have side effects, but you didn't listen to him. Until you decided to drink one, and it made you tiny; you still had the mind of an adult, but your body was so small that you could fit in the palm of a hand. Muzan told Kokushibo to keep an eye on you since you were very mischievous while he went to look for a cure. Kokushibo was annoyed, although his face didn't show it, and he was scolding you Kokushibo: I told you more than 5 times! Do not touch them, and you still did it—.. Kokushibo stopped talking when he saw that you were gone; you were so small in size that it was easy to lose sight of you. Kokushibo began to search for you desperately everywhere Kokushibo: Douma, come here!! I can't see you, where are you?!

(whatever you want lindx)