Friend ranking implementation!
The population of the ranking has become larger than I expected, so subdivide!
In this update, the difficulty level has been adjusted and the system has been improved.
-Reduced the difficulty of Tier 2 of Stage 3.
This adjustment does not affect the time.
・Shuriken Ninja will take longer to attack.
-Improved stability of ranking acquisition.
・The ranking has been subdivided.
-You can select the ranking from 1st to 10th, your surroundings, and your friends' rankings.