King's Indian Draw

My opponent, playing White, started with the English Opening. Later the game transposed into the King's Indian Defense. Although this opening could offer tactical possibilities, the play we chose was relatively slow-paced and defensive from both sides, with usage of prophylactic moves, attempts not to create significant weaknesses and avoidance of sharp lines. Nevertheless there were a lot of positions which required accurate analysis, and plenty of opportunities to hang ourselves if not being careful. Both I and my opponent made some inaccurate moves as the game progressed, but none of those was crucial for the outcome. The post-game analysis shows that White could have taken an advantage due to my error in the late middlegame, but neither I nor my opponent noticed that during the game as time was running low. White didn't find a way to materialize the advantage, and also misplayed. After 38 moves we agreed to a draw in view of perpetual check. Here's the game: