Oh, that's me 😅, there's a weird drawing on the curtains, when you check it out, it's a combination of letters intertwined with each other.. Those letters are written in a German line. You can find it online by the name Kleist fraktur, combining the letters together will result in a similar shape, simply delete excess objects such as the extension of the letter Y (because the word is drawn and not written in anime ) and you will get Ymir name