I know I should solve this Nurikabe variant...
I know I should shade all Masyu circles...
I know I should not let $2 \times 2$ unshaded squares appeared...
I know I should solve this Masyu...
I know I should not solve this Masyu...
I know I should remove that appearing white circle...
I know I should make black circle appeared somewhere instead...
I know I should solve this Masyu now...
I know I should solve this Masyu...
I know I should solve this Masyu...
I know I should solve this Masyu...
I know I should solve this Masyu...
I know I should solve this Masyu...
...
But...
The only thing I don't know is...
How should I make this puzzle more colorful?
Nb. There was a fatal error so I decided to "ruin" the passage a bit. Sorry for this!