How to trigger the juvenile hand knife

The young Ai Shoudao is triggered with enough energy and must be a young character. Young Aire knife is a special weapon, and its trigger needs special conditions. First of all, the character equipped with this weapon must be a young man, because the young Aire knife is related to the age of the character. Secondly, the character must have enough energy to inspire young Alejandro. This means that the player needs to let the character accumulate energy in the battle. Once the energy reaches a certain value, the young Aire knife will automatically trigger. Finally, although the young Aire knife is a powerful weapon, it needs certain skills and strategies to use it.