Quick answer: “Required Cycles: 1” indicates this node becomes available after entering a New Cycle, Phantom Blade Zero’s New Game Plus. Once there, Fortified Body costs one Banyan’s Heart plus 535,500 Remnant Dust; Keen Edge and Focused Mind remain locked behind their preceding node.
You can’t open these three stat nodes in your first run, however much Remnant Dust you have saved. Finish the story first, then come back to the tree.
Which nodes need a cycle
At the far-right edge of the Train Abilities tree, three nodes require a cycle: Keen Edge, Focused Mind, and Fortified Body. All three cards specify “30 levels total”; each level grants 2 percent. Keen Edge increases Attack and Guard Break, Focused Mind boosts maximum Sha-Chi, and Fortified Body increases maximum HP.
On your first run through the story, all three cards list “Prerequisite skill required” and “Required Cycles: 1”. They also show “Total increase: 0%” and end on “TRAINING REQUIREMENTS NOT MET”.
Meet “Required Cycles: 1” by completing the ending, then speaking with Inanis in the Realm of Mirage and beginning a New Cycle. On the Load Game screen, confirm the new save bears “Cycle: 1”.
What the nodes need in the new cycle
Ability Training progress persists into the next cycle, leaving all previously trained nodes on its tree. Rest at a bell and select Train Abilities, then click a node to view its card. Hovering alone won’t bring the card up.
In New Cycle, Fortified Body’s card contains no requirement rows. The Banyan’s Heart appears there as Owned 0, Cost 1, and the “TRAIN FOR” amount is 535,500 Remnant Dust. The button remains grey until you possess a Banyan’s Heart.
The cards for Keen Edge and Focused Mind continue to display “TRAINING REQUIREMENTS NOT MET” in New Cycle. Although “Required Cycles: 1” has a tick beside it now, each card still lists “Prerequisite skill required”.
For Keen Edge, the node before it is Masterful Flow Lv. 2, “Weapon swap cooldown reduced by 2 seconds”. It costs 60,000 Remnant Dust, and you hold Space to train it.
