i suggest not wasting any resources on Tsunade NPC. Instead use vials and/or fragments to breakthrough a specific ninja.

No, if a character is even remotely usuable tsunade does not sell for them. she sells exclusively for characters that are not usable in the state of the game and whose breaks can be obtained for free over time, she is utterly redundant, unless she gets a huge overhaul everyone should ignore her existence all together, since we have this new power system even if you have been here long enough to have recruited all treasure ninjas your scrolls would still be better spent in treasures to level up characters for more power instead of using them to get breaks that are easy and free via other means