Extra Role (称号)

The Extra Role (称号) (しょうごう "Shōgō) is a small extra boost you can give to S-Rank players who are already at their Maximum (極). This adds a few points to the player's Basic skills beyond what their real life skills are.

How to get here

On the Players Menu (選手メニュー) 2nd tab.

Getting the upgrade
You must have an S-Rank already at the Maximum (極). You also need a duplicate player who is A-Rank at maximum Player Experience Level (選手レベル) or S-Rank at any level. You can also use an coach

You can boost your chances for a higher level of upgrade using the Extra Role Secret Book (称号の極意書). You also receive one every time you upgrade a player in this way.