You need ice to make ice.

Think about it. How would you cool water without a cooling system?

With the popularity of iced drinks at this party, I've had to dip into my cooling-ice reserve. Would you help me--and my Shugo watcher--to keep our operation afloat?

Player: Accept.

Yes? Daeva wishes to invest Ice Blocks?

Player: "It's an ingenious system."

Shugo Credit Assurance Office makes very clear. Shugo takes ice, puts in "trust."

Daeva takes Shugo Warranty, gets presents later. Presents not necessarily same ice as went in.
Shugo Credit Assurance Office is not amused.

Bring requisite Ice Blocks. Earn return on icevestment.

Player: "I'll amuse you soon!"