Power Jewels are finite collectibles that permanently raise Samanosuke's maximum health. Each one you find increases your health cap, giving you a larger buffer against boss attacks and a higher survival ceiling in the Dark Realm. There is a fixed number of them hidden in the world, and they do not respawn, so every jewel you miss leaves your maximum health permanently lower than it could be.
Power Jewels matter most in the late game and the Dark Realm, where enemy damage is high and a small health pool means a single mistake ends a run. A player who collects all of them enters the finale and the survival mini-game with the largest possible health bar, which is a direct, tangible advantage that no amount of skill fully replaces.
Because they cannot be farmed like souls, Power Jewels reward thorough exploration rather than grinding. Treat them as mandatory pickups for a smooth, low-stress run, and prioritize sweeping each area for them before moving on. The companion Magic Jewels do the same for your magic meter and are covered alongside them here.
What Power Jewels Do
Power Jewels are finite collectibles that permanently raise Samanosuke's maximum health. Each one you find increases your health cap, giving you a larger buffer against boss attacks and a higher survival ceiling in the Dark Realm. There is a fixed number of them hidden in the world, and they do not respawn, so every jewel you miss leaves your maximum health permanently lower than it could be.
Power Jewels matter most in the late game and the Dark Realm, where enemy damage is high and a small health pool means a single mistake ends a run. A player who collects all of them enters the finale and the survival mini-game with the largest possible health bar, which is a direct, tangible advantage that no amount of skill fully replaces.
Because they cannot be farmed like souls, Power Jewels reward thorough exploration rather than grinding. Treat them as mandatory pickups for a smooth, low-stress run, and prioritize sweeping each area for them before moving on. The companion Magic Jewels do the same for your magic meter and are covered alongside them here.
Where to Find Power Jewels
Power Jewels and Magic Jewels are scattered throughout Inabayama Castle, hidden in the same kinds of spots as Fluorites: corners, alcoves, reward chests, and areas slightly off the main path. The fixed camera conceals them behind objects and at the edges of screens, so a casual pass through a room will often miss them. The key to collecting all of them is a methodical, corner-by-corner sweep of every area.
On a first playthrough, grab every jewel you naturally encounter, but do not stress about finding them all blind -- that is nearly impossible without a guide. Instead, use the first run to learn the layout, then return in Ultimate Mode with a location checklist and comb each area thoroughly. Rotate the camera to check every edge of each screen, open every chest, and examine alcoves you might have rushed past.
Some jewels sit in areas tied to optional exploration or behind puzzles, so if a checklist indicates a jewel in a room you do not recognize, you may need to solve a puzzle or reach an optional area first. Keep notes on any jewel you cannot reach so you remember the prerequisite.
Magic Jewels vs Power Jewels
It is important to distinguish the two jewel types, because they raise different maximums and serve different purposes. Power Jewels raise maximum health, increasing your buffer against damage and your survivability in long fights. Magic Jewels raise maximum magic, increasing how much you can cast before refilling and how big your opening burst can be.
Both matter, but their priority depends on your playstyle. If you rely on magic heavily -- opening every fight with a spell and using Raizan for crowd control -- prioritize Magic Jewels so your burst and control options are larger. If you prefer melee and rely on yellow souls for healing, prioritize Power Jewels so you can tank more hits and survive longer between heals. In practice, collect both whenever you see them, since they are equally finite.
Neither jewel type is upgraded by red souls; they are purely exploration rewards. So when planning your red-soul spending, focus on weapons and let the jewels handle your maximums. A complete jewel set plus maxed weapons is the game's full power state.
Maximizing Your Maximums
To maximize your maximums, the goal is simple: collect every Power Jewel and every Magic Jewel in the game. Because they are finite and hidden, this is an exploration challenge rather than a grinding one, and the realistic path is a two-pass effort -- grab what you can on a first run, then sweep the rest in Ultimate Mode with a checklist.
The payoff is largest in the Dark Realm and the finale. A maxed health bar lets you survive the late waves of the survival mini-game and the big hits of the enhanced Marcellus and Fortinbras, while a maxed magic meter lets you open those fights with your strongest spells and still have reserves for crowd control. Under-collected jewels are a common reason players hit a wall in the late game.
Pair the jewel sweep with your weapon-maxing effort: collect all jewels and max all weapons, and you have reached the game's full upgrade state. Add a full set of Fluorites for bonus content, and you have achieved 100% completion. The jewels are the foundation of that state, so treat the sweep as non-negotiable for a completion run.
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