Dealt over 10,000 damage in a single hit as Remilia or Sakuya.

Raised Remilia or Sakuya's HP above 5000.

Raised Remilia or Sakuya's critical hit rate to 50% or higher.

Raised Remilia or Sakuya's item drop rate to 300% or higher.

Landed a chain of 100 or more consecutive hits as Remilia or Sakuya.

Bought a capsule toy at the Kourindou shop.

Have more than 300,000 coins in your possession as Remilia or Sakuya.