@matt619 He's been sick and bedridden throughout his entire life, longing to be with friends, participate in activities, fall in love or even have a single glimpse of a normal life.
He can get money anytime, but school is something he will only be able to enjoy NOW, and nothing, not even a dragon (waifu) will prevent him from enjoying his school life.
Besides, he's so lacking in common sense he would most likely be scammed out of all of his money.
Wait...so she wanted to know about him and that's why she was going after the club activities paper? I don't get why the author showed the paper after her saying that...what's the correlation?