This is a Sunday Yajilin puzzle, with a twist. This puzzle has two solutions, and you need to find both. Furthermore, the clue numbers may lie or tell the truth, subject to the restriction that each number is correct in one of the solutions and incorrect in the other.
This puzzle is a monster. First of all, this is a really mean variation. Second of all, if this were converted to an ordinary Yajilin with most of the solution intact it would still be extremely hard. Finally, I unintentionally left several potential starting places, and I think only one or two admit a logical solution to the finish. That means you might want to get more than two grids, find a few good break-ins, and combine grids when possible.