Silent Hill f’s Ebisugaoka Middle School turns a hallway of lockers into a cipher exercise. Students use a simple lookalike alphabet—letters swapped for numbers and symbols—to hide words in their lock combinations. You only need one code to progress, but all four lockers are worth opening for useful gear and story notes.

Below is a clean rundown of how the “girl code” works, where to find the clues, every locker combination across puzzle modes, and what each locker gives you. If you want a refresher on the game itself, the official page is on Konami’s site at konami.com/games/silenthill/f/.

How the “girl code” cipher works

The school notes show an alphanumeric substitution using characters that resemble the letters:

  • A → 4
  • I → 1
  • O → 0
  • S → 5
  • U → 6

You’ll see it used in examples like “AOI” → 401 and a “cry for help” (“SOS”) → 505. With these mappings, you can translate any hinted word into a three-digit combination.

All Silent Hill f locker codes (by mode)

Locker Story Hard Lost in the Fog
Asakura Ayumi 534 865 399
Aoi Takeshi 401 401 401
Tsuchiya Taiko (TT) 377 377 377
Suga Yosie 505 505 505

Note: Some guides state the combinations do not change across puzzle difficulties. In practice, Asakura’s locker is the one that varies by mode. The Aoi, Tsuchiya, and Suga combinations are consistent.

What each locker unlocks

Asakura Ayumi (progression): Contains the Key Cabinet Key that ultimately leads to the Mountain/Back Gate key needed to leave the school area.

Aoi Takeshi: Contains an Origami of Grievances with the hint that leads to Suga’s combination.

Tsuchiya Taiko (TT): Grants the Omamori [Wolf]. On New Game+, this is replaced with a Dried Carcass.

Suga Yosie: Grants a School Bag that increases inventory capacity by one. On New Game+, this is replaced with a Shriveled Abura‑age.

Where to find the clues and keys (order of operations)

Second floor classrooms: Solve the “Secret Box” to get a generic classroom key, then enter the two locked rooms on the east side of 2F. On the podium in the nearer room, a “Note to Teacher” explains that Ayumi found a key and left it in her locker. Inspecting also yields the Old Annex Main Gate Key.

Old Annex (1F, north side): Use the Old Annex key to enter. The corridor and two unlocked classrooms are littered with student notes that demonstrate the cipher. These are your decoding samples for A, I, O, S, and U.

Locker rooms: Use the cipher clues with the combinations below. The lockers are labeled with student names or initials, and the origami notes point to which locker each code belongs to.

Once you open Asakura’s locker and retrieve the Key Cabinet Key, you can access the key cabinet and secure the mountain/back gate key to move on from the school.

Deriving each code from the in‑game hints

  • Asakura Ayumi: Her notes vary by mode, but the pattern is straightforward—translate the hinted word into numbers using the cipher (for example, “BUS” on Hard → 865).
  • Aoi Takeshi: “His combination is his name.” AOI → 401.
  • Tsuchiya Taiko: An origami complaint spells out that “TT’s combination is 377,” and the initials point you to Tsuchiya’s locker.
  • Suga Yosie: The note says the number, when converted to letters, reads like a cry for help. “SOS” in the cipher is 505.

Quick walkthrough to clear the locker puzzle

  1. On 2F, solve the Secret Box and unlock the two east‑side classrooms to find the “Note to Teacher” and obtain the Old Annex Main Gate Key.
  2. Enter the Old Annex (1F north wing) and collect the cipher notes scattered in the hallway and classrooms.
  3. Open Asakura’s locker using the code for your mode (Story 534, Hard 865, Lost in the Fog 399) to get the Key Cabinet Key.
  4. Open Aoi’s locker (401) to pick up the note that hints at Suga’s “cry for help.”
  5. Open Tsuchiya’s locker (377) for the Omamori [Wolf].
  6. Open Suga’s locker (505) to get the School Bag inventory upgrade.
  7. Use the Key Cabinet Key to obtain the mountain/back gate key and leave the school area.

Tips

  • If a code that “should” work doesn’t, verify the nameplate or initials on the locker. Multiple rooms and rows make it easy to mix up targets.
  • Asakura’s combination can differ by puzzle mode. If 865 (BUS) doesn’t work, you may be on Story or Lost in the Fog—use the table above or re‑derive it from the notes you’ve collected.
  • If the cipher isn’t clicking, focus on the most common mappings: A=4, I=1, O=0, S=5, U=6. That alone solves AOI, SOS, and BUS.

The locker puzzle is less about brute force and more about reading the students’ notes closely. Open Asakura’s to advance, but don’t skip the optional lockers—Tsuchiya’s Omamori and Suga’s extra inventory materially change how comfortably you can carry and fight in the hours that follow.