Yeah, I lied last time I made one of these; the original Nikoli name wasn’t that hard to remember, and “sashigane puzzles” has shown up as a search query, so here you go. Perfect opposite-type-clue rotational symmetry, chaotic_iak! I hope you’re satisfied now.
As usual, short rules: cut the grid into L-shapes; circles indicate corners; numbers in circles indicate area of Ls; arrows are dead-ends pointing towards the corner. For details, refer to mathgrant’s rules as last time.)