Ryō
Ryō is the main spendable currency in Kakashi RPG. You earn it from supported activities such as combat, training, exploration, hunts, progression milestones and repeatable rewards, then spend it where a system explicitly lists a Ryō cost — most visibly in /shop.
The amount you receive is not fixed across the whole RPG. Activities have their own reward ranges, and buffs or activity-specific modifiers can change the final result. Likewise, a shop purchase charges the current item price multiplied by the quantity you request.
Some defeat or recovery outcomes can also remove Ryō, so carrying a balance does not make it permanently safe. When a command is about to charge you, use the value shown by that command or its confirmation as the amount that matters.