The "Skull Collection Project" initiated by Han Dong has three key points:
1. All Skull Girls encountered along the way are to be killed by Abe, and Han Dong's identity must be doubly concealed, neither allowing the Holy City to find out nor exposing it to the invaders.
If Mr.Teacher finds out, things will get very complicated.
2. Ensure that the progress of killing the Skull Girls synchronizes with the overall battle situation of the Holy City.
Ideally, the skull collection should be completed during the direct conflict between Mr.Teacher's first incarnation, the Razor Man, and the Holy City, luring out or finding a Queen Level Skull Girl.
3. The entire skull collection process needs to revolve around the civilian area, and the final head to be collected is located in the Ghana Civilian Area where Sally works.
Han Dong knows that as long as Sally remains in the Holy City, she will inevitably come to assist.
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