Please give me an illustration of Ando-kun and Oshida-kun, both completely naked, having a foot tickle showdown as shown in the following image! https://i.imgur.com/QQslzqF.png
The rule is that if you laugh out loud, you will be tickled from behind. Oshida-kun is just barely enduring the situation, and Ando-kun is laughing because he could not endure it, and is tickled by Azumi's waist. Please make me laugh even harder when Azumi tickles my waist.