Going to answer anyway if since some people think spending any amount on a game makes you a p2w. You are a p2w until you spend money just to get a ninja(s) that requires a lot of coupons/ingots and have spent a lot on items to increase power. Keep in mind, f2ps c*so get ninjas that cost a lot but it takes longer than p2ws.

Anyways, at the moment, ether the costume or the charms would have been smart choices to spend in lucky board.

The thing about nine tails naruto is that they most likely got that information from the China server since currently, about 3-4 ninjas including NT naruto that are normally event/ingots only ninjas are in bond and tendo treasures. Whether it is an addition in the updates that China did to make the older treasures OR Oasis removed those ninjas from the beginning. I'm hoping for the 1st thought since someone could have bought this difference if they played on both servers, especially playing on China before the global server was created.

Well with the advanced threads, I'm sure at least one player who knows the difference between threads and cloth and got adv threads would have posted their results knowing that people like to be vocal when they believe they are special. That same logic applies to people posting their success stories in RNG events. Due to that logic, I'm will be waiting for that undisclosed update/fix which gives us the threads.