Cleared all Beginner Ability Cap Survival challenges.

Finished the opponent off using Support Drive 2.

Finished the opponent off with a Team Ultimate Jutsu.

Finished a job for the first time.

Caused a Team Bonus in a 4-person battle.

Did a 50 combo attack.

Used a lottery ticket.

Cleared an Ally Event for the first time.

Took a Brief Nap.

Kill the Skeleton King.

This is proof that you've equipped items that activate a Group Union bonus skill. Each basic skill group has a skill corresponding to each of the five elements. It doesn't matter where on your equipment you have the skills equipped; just equip all five skills in a group to form a Group Union!

This is proof that you've equipped items that activate a Stack bonus skill. You can get Stack bonuses by equipping more than one copy of the same skill at once. The more copies of that skill you equip, the cooler your Stack bonus will be!