Find the crumble blocks and crystal flash mid-air, just below them. They are on the far right of the ceiling of the bottom right pathway. Hold down as the CF ends to break the non-respawning crumble blocks. This is for the much harder version, without Gravity and Bombs.

Requires:

"h_canJumpIntoCrystalFlashClip"
"canSuitlessMaridia"
{
  "or": [
    "HiJump",
    "canSpringBallJumpMidAir",
    {
      "and": [
        "h_canCrouchJumpDownGrab",
        "canCarefulJump"
      ]
    },
    "canUseFrozenEnemies"
  ]
}