This is a Tapa puzzle.
The theme is because I turn 23 today. I also recently learned that this is deu’s birthday too; you may know him as a top solver at LMI/WPCs/nikoli.com.
Well, I suppose that mathematically the chances of two active competitors having the same birthday is pretty high. Even so… this does not feel like your typical pair. Apparently the puzzle gods decreed that people born on this day would enjoy nikoli-style puzzles and be very quick at them.