Miss Sasami is Losing Her Mind! — Complete English Walkthrough
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All 8 Endings + R18 Patch Routes

This guide is based on the previously reconstructed Ren'Py script logic.
It avoids descriptions of adult scenes.

ENDING REQUIREMENTS
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Ending 1: Leave the shrine in Chapter 1.
Ending 2: Mirai Points <= 6 at the Chapter 2 checkpoint.
Ending 3: Leave the talisman; Mirai Points <= 10 at the end of Chapter 3.
Ending 4: Leave the talisman; Mirai Points > 10 at the end of Chapter 3.
Ending 5: Keep the talisman; Uta Points <= 4 in Chapter 4.
Ending 6: Keep the talisman; Uta Points > 4; Jealousy Points >= 4.
Ending 7: Keep the talisman; Uta Points > 4; Jealousy Points < 4;
          choose "I'll miss you, you idiot!"
Ending 8: Same as Ending 7, but Mirai Points >= 20 and choose "I love you!"

IMPORTANT: Ending 8 requires at least 20 Mirai Points for "I love you!"
to appear at the final choice.

CHAPTER 1 — COMMON ROUTE
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Choose:
  1. Ask Uta how she's been holding up.
  2. No, I came here for a reason.
  3. I guess it suits you?
  4. I don't think I wished for this, though!

ENDING 1: At choice 2, instead choose "Maybe I should head home."

Make a save at the beginning of Chapter 2.

CHAPTER 2 — MAIN ROUTE
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Choose:
  1. Tell her you can't afford them.
  2. Couldn't we have fun together?
  3. Introduce Uta as a friend.
  4. Tell Uta she's being silly.
  5. I'm sure it'll be fine.
  6. It's more like I'm worried about you.
  7. Tell the truth.

Make a permanent save at the talisman choice.

TALISMAN DECISION:
  - "Leave the talisman in the office." -> Endings 3 and 4.
  - "Take the talisman with you."     -> Endings 5 through 8.

ENDING 2 — LOW MIRAI SCORE
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Load the save from the beginning of Chapter 2.
Choose instead:
  1. Tell her they don't suit her.
  2. Can't you restrain yourself a bit more?
  3. Introduce Uta as a colleague.
  4. Take Uta's warnings seriously.
  5. I'll have to be cautious.
  6. Would you trust you?
  7. Tell a lie.

At the talisman choice, either option works; your Mirai score should
be below the checkpoint threshold, resulting in Ending 2.

ENDING 3 — TALISMAN LEFT, LOWER MIRAI SCORE
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Load your save at the talisman choice.
Choose: Leave the talisman in the office.

Remaining Chapter 2 choices:
  1. She can get it herself.
  2. Hands off. It's mine!

Chapter 3 choices:
  1. I never asked you to look after me, though.
  2. I have no idea!
  3. It'll be embarrassing...
  4. I don't know...
  5. Let's not be too hasty...

Result: Ending 3.

ENDING 4 — TALISMAN LEFT, HIGHER MIRAI SCORE [R18]
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Load your save at the talisman choice.
Choose: Leave the talisman in the office.

Remaining Chapter 2 choices:
  1. Help a girl out.
  2. Why not? It's only milk.

Chapter 3 choices:
  1. Yippee for me. I'm so lucky.
  2. Duh.
  3. If she really doesn't mind...?
  4. Isn't it too late to ask that?
  5. I think it could be.

Result: Ending 4.
With the R18 patch active, the optional adult_ex segment is used.

CHAPTER 4 — ENDINGS 5 THROUGH 8
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Load the save at the talisman choice.
Choose: Take the talisman with you.

Use the positive Chapter 2 and Chapter 3 choices from the Ending 4
route above. Save again at the beginning of Chapter 4.

ENDING 5
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Chapter 4:
  1. Ignore her.

Result: Ending 5 (Uta Points <= 4).

ENDING 6
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Chapter 4:
  1. Reply to her.
  2. Could it be Mirai?
  3. I think I might have fallen for her, and now...

Result: Ending 6 (high Jealousy score).

ENDING 7
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Chapter 4:
  1. Reply to her.
  2. It's probably Uta.
  3. We had an argument, and now...
  4. I'll miss you, you idiot!

Result: Ending 7.

ENDING 8 — TRUE ENDING [R18]
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Chapter 4:
  1. Reply to her.
  2. It's probably Uta.
  3. We had an argument, and now...
  4. I love you!

The last option requires Mirai Points >= 20. The previously reconstructed
high-score route has 29 Mirai Points at this choice.

Result: Ending 8.
With the R18 patch active, the optional adult2 segment is used.

R18 PATCH VERIFICATION
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The patch adds three optional sections when persistent.adult == True:
  - Chapter 3: label adult (returns via jump cont2)
  - Ending 4: label adult_ex
  - Ending 8: label adult2 (continues via jump credits_fin)

The patch does not add a ninth ending or alter the main score thresholds.

Known script issue:
  The R18 route for Ending 4 sets persistent.ending4 but does not call
  achievement.grant("four"), unlike the original, unpatched route.

To confirm the patch is active, fully restart the game and check whether
its window title includes "(18+)".

COMPLETION CHECKLIST
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[ ] Ending 1 — Early departure
[ ] Ending 2 — Low Mirai score
[ ] Ending 3 — Talisman left, low Mirai score
[ ] Ending 4 — Talisman left, high Mirai score (R18)
[ ] Ending 5 — Low Uta score
[ ] Ending 6 — High Jealousy score
[ ] Ending 7 — First final choice
[ ] Ending 8 — True Ending (R18)

NOTE
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This is a text-file copy of the walkthrough provided in the conversation.
It is reconstructed from scripts, not validated by a full playthrough.