21:22 Baldi is kind of a joke horror game in which you are in a schoolhouse of a bald teacher to collect the notebooks of your friend that he left and the teacher tries to kill you for answering some questions wrong on the notebooks by slapping his ruler on his and and gets faster every time you get a question wrong.
You are going to "return" to hollow Knight(todavía estoy aprendiendo inglés xd) Vas a retomar hollow Knight o cuando lo vas a subir. A lo mejor lo quieres jugar por ti mismo,aunque te perderías más de lo que ya te pierdes xd.