"Do you desire power?" "No, I desire money."
"Do you crave power?" "No, I crave money."
"Do you long for eternity?" "This is the third time! I don't want to be an eternal poor man, I long for money!"
"..., With me, you won't have to worry about food and drink." "Okay! Deal!"
This is a strange combination of a poor college student and a talkative "Book of Summons". After experiencing various events, he became poorer(?).