Fu Qian's purpose in seeking Sergei was simple: He wanted to follow in the footsteps of the heretical precursors and switch to a new vessel.
However, given the current limitations to only physical possession, lacking any overly fantastical methods, the considerably large Sergei became the first choice.
By directly dissolving and twisting his flesh into that of a mollusk, from the abdomen to the esophagus, Fu Qian quickly completed the process akin to a hermit crab changing shells.
Due to a lack of experience in this area, Fu Qian proceeded with extreme caution throughout the entire process, even setting aside Mercy and the Tranquilizer.
Even so, Sergei's form still swelled significantly after the completion.
Of course, this was only the first step.
At this moment, Sergei could be described purely as a walking corpse, uncontrolled.
He couldn't just wander around squeezed among a mass of organs.