Logic Masters Deutschland e.V.

Happy Birthday
This puzzle is my birthday gift for Scojo!
Scojo is the glue that holds the wonderful Twitch Sudoku community together.

Special Thanks
This puzzle is the 'easy dubz*' younger brother to the beast that is Dutch Cat Mates by Andrewsarchus.
(*relatively speaking)
Also a huge shoutout to palpot, who helped me find a valid puzzle that wasn't trivial.

To play the puzzle, please click the image:

Initial Setter Difficulty: 2.5 / 5

Normal 6x6 Sudoku rules apply
Place the digits 1-6 exactly once in every row, column, and 2x3 box.

Copy Cat cells
Exactly one cell in each row, column, and box is a Copy Cat cell.
The digits 1-6 each occur exactly once in a Copy Cat cell.
The value of a Copy Cat cell is the digit (not value) from the rotationally opposite cell in the grid.
For example, if R2C3 is a Copy Cat cell, then its value is the digit from R5C4.

Dutch Flats
Every cell with a value of 5 must have a cell directly above it with a value of 1.

Kittens
A cell with a kitten, has a value that matches its row or column (in normal reading order). All possible Kittens are given.

Hint to start

Value 5 in Row 1 cannot exist. The other 5s always need a value 1 above them.