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In Falsus Wiki · ULTIMATE

Cold Sea ULT 10: the Secret chapter's first count on film

Cold Sea — Sakuzyo's Secret-chapter track for In Falsus, unlocked through the Secret Trigger — sits in the song table with all four note counts blank, and this page records its ULTIMATE 10 rung in full: a filmed clear, logged judgment by judgment. The DIVE RESULT card fixes the chart at 1,282 notes — EXACT 1001 + 128, NEAR 88, BREAK 65 — a total no public source had on record before (checked September 21, 2026). The filmed run ends DIVE CLEARED at 091'498'661 for rank A at SPEED 7.00, played with Assist Mode on — the CONNECT gate prints it, the result card repeats it, and so does every mention here. The video carries no usable commentary, so every fact is read off 1600px frames, and until a second source corroborates them the numbers stand as a single-source record. Twelve frames below run from the song-select ladder to the unlock reveal, each deep-linked to its moment. Chart talk only below the notices; no story scenes appear in any frame.

SongCold Sea — Sakuzyo
DifficultyMIN 4 · EVO 7 · ULTIMATE (ULT) 10 · FORBIDDEN (FBD) 13
ULT 10 notes1,282 — EXACT 1001 + 128 · NEAR 88 · BREAK 65 (first published, single-source)
The runDIVE CLEARED on film — 091'498'661 (A) · MAX LINK 178 · Assist Mode disclosed

Sources

Screenshots are frames from TrappyTheDemon's [In Falsus] Cold Sea (ULT 10) (credited above) — a 3:06, commentary-free capture whose automatic captions contain only song vocals, so no spoken facts were used: every number on this page is read off 1600px frames, and each step deep-links to the matching moment of the run. The difficulty ladder (4 / 7 / 10 / 13) and the result-card tally are read from the same video; until a community wiki or a second filmed run corroborates them, all values on this page are recorded as single-source (checked September 21, 2026). One honest note: the recorder's live-stream badge is visible at the left edge of two menu frames — capture overlay, not game UI.

Spoiler notice: Cold Sea is a late-game secret — our song table files it in the Secret chapter with the unlock recorded as Secret Trigger — so knowing the song exists is itself a progression spoiler. Meta title and description stay chart-only, everything below this box shows gameplay systems only, and the one unlock-presentation frame (the Song Unlocked jacket reveal) is placed at the very end of the walkthrough. If you are saving a blind run, stop reading here.

Assist disclosure: the filmed run was played with Assist Mode. The evidence is twofold — the CONNECT gate prints Assist Mode Enabled under the NIA ↔ KEATS pairing, and the result card carries the ASSIST MODE box below the IOTA panel. Every number on this page is read off the screen exactly as recorded; treat the score as an assisted sightread baseline, not an unassisted benchmark.

Pre-dive: select, confirm, disclose

  1. 1

    Find the rung: ULT 10 on the selector

    Cold Sea's select screen lays the whole ladder out in one panel: 4, 7, the highlighted 10 in purple, 13 — four numbers our songs table had left blank, and this page takes the rung that matters. ILLUST credits fixro2n under the jacket, Sakuzyo's red figure stands in the frame, and PLAY waits bottom right.

    In Falsus song select for Cold Sea by Sakuzyo with the difficulty ladder reading 4, 7, 10 and 13 above PLAY
    The select screen: the ladder reads 4, 7, 10 and 13, with ULT 10 highlighted.Watch at
  2. 2

    Read the contract: ULTIMATE 10, a blank HIGH SCORE

    The pre-dive card pins DIFFICULTY to ULTIMATE and leaves HIGH SCORE empty — a first entry on this account, and half of the first-clear evidence this page stands on (the result card's DIFFERENCE row is the other half). The pairing is already set: NIA on the left, KEATS on the right. A small live-stream badge from the recorder's setup rides the left edge of this frame — capture overlay, not game UI.

    The pre-dive card locks Cold Sea at ULTIMATE 10 in In Falsus with the HIGH SCORE line left blank
    ULTIMATE 10 with a blank HIGH SCORE — the account's first entry on this chart.Watch at
  3. 3

    Spot the disclosure: Assist Mode Enabled on the CONNECT gate

    CONNECT resets the score to 000'000'000 and pairs the encounter characters — NIA ↔ KEATS — above the empty six lanes. Right under the pairing bar sits the banner that colors every number on this page: Assist Mode Enabled. The result card prints it again at the bottom. Nothing here is hidden; the score is an assisted baseline.

    Cold Sea's CONNECT screen in In Falsus pairs NIA with KEATS and prints an Assist Mode Enabled banner
    CONNECT: NIA ↔ KEATS, with Assist Mode Enabled printed under the pairing bar.Watch at

Opening: the climb and the first rebuild

  1. 4

    Count the lanes before the first note

    The dive opens at 000'000'000 on an empty field: four key lanes A S D F between the two wide outer fields this HUD labels Umschalt and Leer. Top right, the contract stays pinned all run — Cold Sea / Sakuzyo, ULT 10, SPEED 7.00. The first note in is a yellow hold, dropped straight down the middle.

    An empty six-lane In Falsus field at 000'000'000 opens the Cold Sea ULT 10 dive with SPEED 7.00 pinned
    000'000'000: six empty lanes, A S D F between the Umschalt and Leer rails.Watch at
  2. 5

    Ride the wide field to chain 45

    The climb is quick: chain 45 with 014'294'286 on the board, a full-width violet field draining mid-lane, four EXACTs ringing the line, and a gold IOTA hexagon waiting on D. Cold Sea's early middle is a breathing section — wide, spare, the calm before the chart starts collecting breaks.

    In Falsus counts the Cold Sea chain to 45 under a wide violet field while four EXACT judgments ring the line
    Chain 45 under a wide violet field — four EXACTs on the line.Watch at
  3. 6

    Rebuild after the first break

    The staircase slab — a violet rectangle stepping down across the keys — says the section changed, and so did the chain: it reads 12 at 026'145'829, rebuilt after a break. This run breaks often — 65 times on the final card — and the MAX LINK of 178 is earned in the clean stretches between, not in one unbroken line.

    A staircase violet slab crosses the In Falsus keys at 026'145'829 as the Cold Sea chain rebuilds to 12
    The staircase-slab section: the chain rebuilding at 12 after a break.Watch at

Mid-chart: NEAR stamps and the climax burst

  1. 7

    Let EARLY NEAR coach your timing

    At chain 79 — deeper than most of this run travels before a break — an EARLY NEAR stamps beside an EXACT: the press landed just ahead of the window. NEAR still credits the note but bleeds score, and 88 of them are baked into the final card. The yellow hold down the middle keeps running while you adjust.

    An EARLY NEAR stamp flags a drifting press at chain 79 while EXACTs hold the Cold Sea ULT 10 line in In Falsus
    EARLY NEAR beside an EXACT — the chain rides at 79.Watch at
  2. 8

    Meet the climax burst

    The chart's busiest turn: a gold note flares at the judgment line as a teal slab spans the right side, three EXACTs land together, and the counter climbs through 17 at 065'383'212 — another rebuild, more proof the run survives its breaks. Red-nebula backdrops like this one mark the second half.

    A gold burst meets a teal wide slab as three EXACTs land together in the In Falsus Cold Sea climax
    Gold burst, teal slab, three EXACTs landing together.Watch at
  3. 9

    Sweep the full key line in the final build

    Late in the dive, six EXACT judgments light up at once — A S D F plus both outer fields — while a violet slab drains the right side and the score ticks past 087'606'532. This is the last dense block before the tape runs out; the gold hexagons on the outer fields show the IOTA pickups landing too.

    Six EXACT judgments span the full In Falsus key line at 087'606'532 late in the Cold Sea ULT 10 dive
    The final build: six EXACTs across every lane at 087'606'532.Watch at

The close: banner, card, unlock

  1. 10

    DIVE CLEARED closes the dive

    The banner sweeps the emptied field seconds after the final note, the score already frozen at 091'498'661. The rank was decided long before — 88 NEARs and 65 BREAKs are baked in — but on the account's first entry, DIVE CLEARED is exactly the outcome that unlocks what follows.

    The DIVE CLEARED banner sweeps the emptied In Falsus field right after the last note of Cold Sea ULT 10
    DIVE CLEARED — the banner over an empty field.Watch at
  2. 11

    Read the card: 1,282 notes, A, assist disclosed

    The DIVE RESULT card fixes the chart's size: EXACT 1001 + 128, NEAR 88, BREAK 65 — 1,282 notes on ULT 10, a total no public source had on record before this page. Score 091'498'661 for rank A, MAX LINK 178, Miss Gauge 15, DIVE CLEARED — and the first-clear arithmetic in one row: HIGH SCORE still blank, DIFFERENCE +091'498'661, the full amount. At the bottom, the IOTA panel's ASSIST MODE box prints the disclosure from the CONNECT gate one more time.

    The In Falsus DIVE RESULT card totals Cold Sea ULT 10 at 1,282 notes — EXACT 1001 + 128, NEAR 88, BREAK 65
    The card, digit by digit: 1,282 notes, A at 091'498'661, Assist Mode printed below.Watch at
  3. 12

    Song Unlocked: the jacket, kept for last

    The payoff of the Secret Trigger unlock: a Song Unlocked overlay presents Cold Sea's jacket — SAKUZYO's red-and-white figure — to the account for the first time. It is the only unlock-presentation frame on this page, which is why it sits after the result card, behind the spoiler notice, at the very end of the walkthrough.

    A Song Unlocked overlay reveals the Cold Sea jacket art by SAKUZYO after the first In Falsus clear
    Song Unlocked: the SAKUZYO jacket reveal — the spoiler moment, kept for last.Watch at

FAQ

How many notes does Cold Sea ULT 10 have?

1,282 — and this page is where that number becomes public: the DIVE RESULT card sums to EXACT 1001 + 128, NEAR 88, BREAK 65. No community wiki or score tracker carried an ULT 10 count for Cold Sea before this page (checked September 21, 2026), so it is recorded here as a single-source reading until a second record corroborates it. The select screen's ladder reads 4, 7, 10 and 13; the other three rungs' note counts remain unrecorded.

What score did the filmed Cold Sea ULT 10 run get?

091'498'661 for rank A, with MAX LINK 178, a Miss Gauge of 15 and DIVE CLEARED — on the account's first entry, as the blank HIGH SCORE and the full-amount DIFFERENCE row show. One caveat belongs next to that number: the CONNECT gate printed Assist Mode Enabled and the result card carries the ASSIST MODE box, so treat it as an assisted sightread baseline, not an unassisted benchmark.

What scroll speed should I use for Cold Sea ULT 10?

The filmed run plays at SPEED 7.00, pinned on the HUD from the first frame to the result card. Cold Sea's difficulty is stamina more than overlap: 1,282 notes at 155 BPM keep the judgment line busy for nearly three minutes, and the chart collects 65 BREAKs even from a practiced player. If your precision decays late, one step slower is a fair trade.

How do I unlock Cold Sea — and is this page safe before I finish the story?

Our song table files Cold Sea in the Secret chapter with the unlock recorded as Secret Trigger — a late-game gate — so the song's existence is itself a progression spoiler. Meta title and description stay chart-only, every frame below the notices shows gameplay systems only, and the one unlock-presentation frame (the Song Unlocked jacket reveal) sits at the very end of the walkthrough. No story scenes, dialogue or endings appear anywhere on this page.

Written for infalsustips.com from our own demo testing and community research. Fact-checked against: In Falsus Wiki (Miraheze) (CC BY-SA 4.0) · In Falsus Wiki (Fandom) (CC BY-SA)

Data reflects demo v0.3.1 · being re-verified on 1.0 · Unofficial fan site — In Falsus © lowiro