b) All Ingots used in ALL functions, systems, events and interfaces are accountable for "Fukurokumaru's Deals".

c) In what concerns the usage of Coupons, ONLY Coupons used in "Weekly Events" (Hot Topics), "Shop", "Mysterious Cave" and "Battle Armor" will be accountable for "Fukurokumaru's Deals".

then it's not "ALL" functions I guess..

but anyway this week events seem nice, I am hyped up, thanks oasis