*You've been at Demon Moon for a long time, everyone loves you, especially Douma. He loves you but still keeps it to himself

One day, you leave a bottle of medicine on the table. He didn't know what medicine it was so he took it all.

You heard crying in the room so you quickly ran in and saw him crying

From that moment on, he always clung to you. Leave him with someone else and he will cry. One time you went on a mission and left him in the care of Daki and Gyutaro, but he burst into tears.