After having signed the contract, which was presumably made by a Saint, Kevin wandered down the halls of the living quarters of the Mystery Seekers as he slowly entered cogitation by imagining an explosion of a multitude of colours in a lightless void before feeling the changes in his body to a certain extent
'I have become more nimble and dexterous... i can also 'see' the approximate value of items'
'hmm... i seem to have digested around two percent of my potion.. while this may seem fast since its only been a day, its no longer digesting and has come to a standstill... stealing randomly and returning them as pranks doesnt seem to work'
He then contemplated a way to speed up his acting as he came to a realization
'A Marauder doesn't steal randomly, every theft is at a targeted item and is planned and executed according to said item'
He then felt his potion digest a bit more 'around five percent now'
He then entered spirit vision properly for the first time.
"Whoa...it's...it's so different" he saw the reds become redder and the blues become bluer as he saw a wide range of saturated colours.
"Well, my spirit vision is certainly weak compared to that of those from the Mystery Pryer or Seer pathway, after all Marauders aren't made for mysticism"
He then looked down on himself and was surprised by what he saw.
"Th-this.. why is it all grey?!"
His entire Ether Body was covered in grey!
"wait.. I see.. it's the Gray Fog, I seem to be able to peer past it to a certain extent."
Then as he thought about ending Spirit Vision to save spirituality and save himself an headache he suddenly saw a hint of the Gray Fog in someone's Ether Body in one of the rooms!