Actually, the parasitic method of the "mutated parasite" differs greatly from traditional parasites.
Most of the time, it doesn't directly absorb the host's blood, but drives and guides the host to actively obtain fresh blood from other organisms. After absorbing this blood, it 'transforms' the host's body to a certain extent.
However, based on Xiang Kun's research, the relationship between the "mutated parasite" and its host is not "mutualistic", but still "parasitic".
Aside from its impact on the host's mind, altering the host's normal thinking and behavior patterns, causing the host to unknowingly fall into danger, the changes it induces are not entirely beneficial for the host's body.
As Xiang Kun had previously speculated, the "mutated parasite" essentially regards its host as its "vehicle" or "tool" for "transformation". The stronger the host, the greater its willpower, the more advantageous it is for the parasite to absorb more types of fresh blood.