Aku let out a smile as both of the students who were participating answered simultaneously. He took another drink from his goblet and looked around. They seemed to be done eating and more interested in his riddles at this point. 

“Well, I guess you all know these riddles. They are good but still. I was going to come up with something new but alas the night is young. I will see you all in the afternoon. If you all wish to sleep now then you may do so. Although if you stay up I could just start teaching you all now. Then again you are all probably exhausted from the journey here. With that I excuse myself.” He said as he scooted out of his chair and took his blood with him. He exited the room and as he did another “him” walked into the room from the kitchen. Quickly he started to clear the table. 

“Are you finished?” He asked with a smile to each student. This was probably the biggest puzzle that the students would have to face. How does he do that?