Even if the situation gets worse, they don't yet know the truth about Kiriya's relationship with sensei, but they do know that he's "an irresponsible man" . They're going to sell the books in the clubroom, and they'll be able to dress up as waiters and serve tea to people who want to read them. Kiriya is a "peculiar teacher" , they say, so they should print 100 of the books and sell them for 300 yen each