the games with the thumbs up at mid chapter :
It can be played with any number of people. First, you do janken (rock, paper, scissors) to choose the 'leader.' Then everyone clenches their hands and puts their arms out in front of them so that their left and right hands meet. The leader calls out, 'Isse no se!' (Ready, go!), but instead of 'se,' that person says a number. At the same time, each player sticks up one thumb, two thumbs, or no thumbs at all. If the total number of thumbs sticking up, including the leader's, is the same as the number that the leader called out, the leader scores a win. If you win, you can put one hand behind your back, but if you don't, you stay in the same position. Everyone goes around taking turns being the leader, and the first person to put both hands behind is the winner."