A lot of concerts in Japan work on a lottery. When you enter the lottery you can select for how many tickets up to a set maximum. If you get selected, you're ob

A lot of concerts in Japan work on a lottery. When you enter the lottery you can select for how many tickets up to a set maximum. If you get selected, you're obligated to pay and can't cancel. So... I imagine if you want to go as a group, one person puts in for the lottery and either everyone gets to go or no one does.