Since the raise of the enemy levels on challenge missions, gathering higher materials like for instance, Shimenawa, for raising awakened level has become a much longer process. While I know it was intentional to raise the enemy levels, I do not know for what purpose this was done. However, if light of this inconvience to all players who hadn't already 3 starred these mission before 2.0, I think the sweeping requirement should be changed to 2 stars to sweep.

This would allow players to gather materials for upgrades without wasting loads of their time, while still leaving the challenge of 3 starring a whole chapter to earning the coupon rewards provided. I know personally I don't want to waste 5 minutes clearing a mission that has no challenge to the regular part just to collect materials that I should be able to sweep for.

Its bad enough with the gap between players who made it to exam level 100 or 120 with the lack of abiliity to improve ninja gear, so we shouldn't have yet another faucet of making it more difficult/time consuming to awaken our ninjas too.