Ran Yin travels through the book and becomes a cannon fodder that likes the protagonist's attack, or a cannon fodder among cannon fodders.
Others have a system for wearing books, but the system with dyeing sounds is still free-range. He just needs to be alive. Even so, Ranyin still has a companion soul, and this soul is still the original owner.
Later, Ranyin regained his original memory. He and the system were colleagues, and he once managed the world.
In the end, Ranyin was tempted by the protagonist to attack Gu Yunqing's appearance, and he successfully became gay, and then it ended happily.
Purpose: Don't lose your memory randomly