Logic Masters Deutschland e.V.

Previous Dutch Flat Mate Puzzles
This has been a weekly series since '18 Oct 23'. Here is a spreadsheet link for all the previous puzzles in the series, which also has a few teasers for upcoming constraints/guest setters in the series (subject to change).
This alternative link offers a limited LMD search for Dutch Flat Mates.

Special Thanks
The original inspiration for this puzzle was Borderland (3/5) by Richard.
Following chats with gdc and palpot about how best to present this puzzle, I finally settled on this title, version and rules; which is closer to the following puzzles:
- The Big Beach Parity (1/5) by gdc, and,
- Parity Islands (3/5) by yttrio

To play the puzzle, please click the image:

Initial Setter Difficulty: 2.5-3 / 5

Normal Sudoku rules apply
Place the digits 1-9 so that they do not repeat in any row, column, or 3x3 box.

Dutch Flats
Every 5 in the grid must have a '1' directly above it or a '9' directly below it. It may have both, but it doesn't need both.

Parity Islands
Orthogonally connected groups of cells with the same odd/even parity are called 'islands'. A digit in a circle counts the number of cells in its island. Islands may have multiple circles. Not all possible circles are necessarily given.

Hint to start

I would recommend colouring parity. Keeping circles apart that are in the same row, column or box is important, otherwise they would need to be the same value/digit. 1 (odd) in Row 8 is the only Flat Mate for 5 (odd) in Row 9 - this impacts circle options in Row 8.

Visual Rules Example: