In Sekiro: Shadows Die Twice, how to check whether Sekiro has a double challenge can be as follows:
Double difficulty means returning the young master's amulet to the young master and ringing the bell at Xianfeng Temple. Both of these measures will increase the difficulty of the game, so it is called double difficulty.
When you first meet the prince in the attic at the beginning of the game, there is an option to return "Kuroro's Charm" in the dialogue. If you confirm the handover, the game will be more difficult, and the enemy's attack and defense endurance and AI will be further improved (probably compared to the ordinary two weeks). The target is 20~30% higher), and if you don't block perfectly, you will lose blood.