Idk... when you post info of the events like this it seems to me like if i asked you "What's Harry Potter about?" and you answered "It's about a wizard"...
I meam, cmon, all we care is what ninjas and items can you get/exchange for. If there's a reason why you aren't doing that, then fine. But still think there shouldn't be one.
As for the events, seem to me they are pretty good. Mostly because of new Rune Stone system and that Ninja School Winter Camp. Other than that, Sage Treasure is okay, Lucky Stars Wheel - worst event ever.