"Believe in yourself, Gross, as the most talented of the Nightingale Family, you can surely pass the trial of the Crimson River!"
Gross stood at the edge of the Crimson River, muttering to himself, repeating the key points recorded in the family's secret annals:
"First and foremost, remember that any mystical breakthrough cannot be abandoned halfway, once you've decided to start, you must persist to the end, whether you succeed or fail..."
"Next, the Crimson River possesses strong corrosive properties that can erode the soul, thus spiritual protection is of utmost importance."
While speaking to himself, he used unnamed arts to reinforce layer upon layer of protection around his soul.
"Erosion isolation!"
"Spiritual enhancement!"
"Radiant guard!"
...
Various unnamed arts, potions, and magical items were utilized, making his Spiritual Body look as though it was clad in a luminescent outfit of myriad colors.