Anyone who wears a soul can have the aura of the protagonist after all, but she is the one whose body owner actively chooses to let her wear it on him.
At least her system could have some auxiliary role as a nanny. Her system didn't know anything about it and told her that the purpose of soul penetration was to speed up atonement.
Other people's soul-traveling characters are basically on the upswing, but hers has been on the decline. The poor and ugly gangster Bah II master can't find any foreign help anywhere. How should she go about the next plot!
Purpose: Everyone has unlimited possibilities and should make the decision on their own life.