Hinako ties her masochist sub upside down and prepares 10 whips. She blindfolds him and gives him a small taste of each whip. Then, she chooses one. He has to guess which out of the ten whips he is being hit with. If he gets it wrong, he will be punished. The first time around, he guessed the 10 whips immediately, prompting Hinako to make things more difficult by upping it to 15. After doing that, he was not able to guess them correctly at all and thus was punished a lot, receiving many many lashings.