The 18+ patch here (remove spaces):
https : // drive . google . com / uc ? id = 1fDCAqVLwM01xgnL2ynncoXHm9rP9Z155

You can replace the files at your installation folder:
C:\Program Files (x86)\Steam\steamapps\common\The logic of the miniature garden

⭐ Go to "Settings".
⭐ Set "Display time" under "Text Display Setting" to the fastest.
⭐ Set "Wait period in autoplay mode" under "Auto-play setting" to the fastest.
⭐ Make sure "Stop autoplaying when encounter choices" under "Auto-play setting" is "On".
⭐ Change "FF settings" under "Fast Forward Mode Setting" to "All".

NOTE: Please follow the guide carefully. Once you reach the page where you can "Start game with info inherited" (screenshot below), please do not click anything else, because if you do, you will have to unlock certain parts again.

To avoid this problem, it is a good idea to make frequent saves and start from where you left off, when you continue again.

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Below is a screenshot of the flowchart:

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✦ Start a "New Game".
✦ For those not bothered to read the story, you can start using the "Skip Mode", and continue using it after every choice.

✧ Take actions with Koko.

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Pick Kirika or Koko to Be Your Partner (Purple, Branch)

✧ Take actions with Kirika.
✧ Eri Kobayakawa
✧ Can’t believe her.

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Believe What Kirika Says? Or Not? (Purple, Branch)

✧ Believe Kirika.
✧ or about Eri Kobayakawa.
✧ Give the place up

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Try to Crack the Code Again? (Purple, Branch)

✧ Re-decipher
✧ Tell her that she can stay here all the time.

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> The Backyard of Miniature Garden. Need Kirika’s Key? (Brown & Black, Key)

✧ Scold Koko.

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Give A Lecture To Petulant Koko (Purple, Branch)

✧ Ask Koko nicely.
✧ I care about Kidou and I want to help her.
✧ Not to cause chaos on campus

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Want to Rescue Shizuku? (Purple, Branch)

✧ I should first solve the case.
✧ Kaori Ikumi
✧ Go see Senpai Sakuraba.

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Go to Find Moemi? (Purple, Branch)

✧ Don’t go see Senpai Sakuraba.
✧ Buy lottery tickets.

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Could Riru Stay Here? (Purple, Branch)

✧ Convince her.
✧ Stop searching

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Continue the Search? (Purple, Branch)

✧ Go on searching

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Try to Buy A Lottery? (Purple, Branch)

✧ No.
✧ Eri Kobayakawa lost in September.
✧ Tell her not to go.

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Could I Go? Senpai (Purple, Branch)

✧ Tell her to go.

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> The Door That Is Blocked (Brown & Black, Key)

✦ Start game with info inherited (DO NOT CLICK ANYTHING ELSE)

✦ Flowchart -> Go to Find Moemi? (Purple, Branch)

✧ Go see Senpai Sakuraba.

✦ Extra Mode (Now fully unlocked)

✦ Novel

✦ Extra Scenario