Kakkoii Onnanoko to 12-centi no Yakusoku
ongoing
By Ziki Masaya
Tomoaki Kanba admired his boyish childhood friend, Ibuki Tachibana, and promised to become "more cool" than her. However, four years have passed, and Ibuki has grown up to be an even more handsome girl! Their relationship is as unchanged as a 12cm height difference that cannot be filled...? The curtain rises on a pure love story about a cool girl who is sorely in love with a boy who wants to be cool!- --- Serialization of the Twitter webcomic *[A Story About Becoming Cooler Than the Cool Girl](https://mangadex.org/title/d0407445-b80d-4854-9f12-c8227f94cba6/)*.
Chapters
82 total
Chapter 69: The beach and wicked thoughts NEW
Jul 31, 2026
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Chapter 68: Love is amazing
Jul 18, 2026
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Chapter 67: Is it because she's in love?
Jun 26, 2026
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Chapter 66.5: GANMA Premium Bonus Chapter: The Cool Mermaid Princess
Jun 20, 2026
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Chapter 66: Don't underestimate your brother!
Jun 6, 2026
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Chapter 65: Oshi
Jun 5, 2026
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Chapter 64: A godly event
Jun 3, 2026
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Chapter 63: The chaotic four
Jun 2, 2026
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Chapter 62: Does she hate him?
Jun 2, 2026
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Chapter 61: I absolutely cannot tell her
May 29, 2026
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Chapter 60: My bad
May 26, 2026
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Chapter 59: You've gotten so big
May 25, 2026
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Chapter 58: I'm not budging
Mar 17, 2026
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Chapter 57: Introductions
Mar 17, 2026
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Chapter 56: To be coddled
Mar 17, 2026
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Chapter 55: Promise Me
Feb 20, 2026
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Chapter 54: As her boyfriend…
Feb 1, 2026
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Chapter 53: Am I worthy of being her boyfriend?
Feb 1, 2026
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Chapter 52: I'm so Lame...
Feb 1, 2026
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Chapter 51: It Hurts
Dec 6, 2025
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Chapter 50: I keep remembering
Nov 5, 2025
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Chapter 49: Ferris Wheel
Oct 9, 2025
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Chapter 48.5: Special Chapter: My Cool Girlfriend
Sep 16, 2025
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Chapter 48: The Meaning of "Love"
Sep 16, 2025
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Chapter 47: A Cool Girl
Sep 16, 2025
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Chapter 46: You Can Do It
Sep 16, 2025
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Chapter 45.5: Volume 5 Bonus Chapter NEW
Jul 31, 2026
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Chapter 45: Holding Hands
Sep 16, 2025
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Chapter 44.5: Ganma Extra
Sep 16, 2025
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Chapter 44: A Date at the Amusement Park
Sep 16, 2025
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Chapter 43: Exthited
Sep 16, 2025
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Chapter 42: I'd prefer if it was just the two of us
Aug 5, 2025
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Chapter 41: Don't go
Jul 20, 2025
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Chapter 40: Trauma
Jun 30, 2025
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Chapter 39: Grumpy
Jun 30, 2025
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Chapter 38: My heart is so noisy…
Jun 24, 2025
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Chapter 37.5: Volume 4 Bonus Chapter
Jul 2, 2026
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Chapter 37: Am I in love with her?
Jun 10, 2025
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Chapter 36: Jealousy
May 23, 2025
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Chapter 35: I’ll help you
May 8, 2025
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Chapter 34: Tailing
Mar 27, 2025
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Chapter 33: Physical Exam
Mar 9, 2025
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Chapter 32: Please Give Me Some Time
Mar 5, 2025
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Chapter 31: I Don't Understand Love
Feb 22, 2025
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Chapter 30: Reunion and Confession
Feb 16, 2025
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Chapter 29.5: Volume 3 Extra
Oct 9, 2025
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Chapter 29: Skipping Class
Feb 5, 2025
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Chapter 28: The Transfer Student
Feb 3, 2025
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Chapter 27: A New Class
Jan 24, 2025
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Chapter 26: My Girlfriend.
Jan 10, 2025
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Chapter 25: What If...
Oct 21, 2024
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Chapter 24: The meaning behind that heat
Sep 27, 2024
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Chapter 23: Hold My Hand
Sep 2, 2024
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Chapter 22: I wanted to hang out
Aug 23, 2024
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Chapter 21.5: Special: The Tachibana Ibuki Fanclub
Jul 21, 2024
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Chapter 21: Irreplaceable
Jul 7, 2024
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Chapter 20.7: Guest Chapter by Fuminosuke
Jun 29, 2024
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Chapter 20.6
Jun 26, 2024
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Chapter 20.5: Volume 2 Extras
Jan 24, 2025
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Chapter 20: Hero
Jun 25, 2024
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Chapter 19: I have worries
Jun 24, 2024
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Chapter 18: Fortunes
Jun 24, 2024
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Chapter 17.5: First earrings
Jun 23, 2024
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Chapter 17: Earrings
Jun 22, 2024
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Chapter 16: Wait for me
Jun 22, 2024
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Chapter 15: At least a little
Jun 21, 2024
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Chapter 14: What is Ibuki?
Jun 20, 2024
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Chapter 13: Show them to me
Jun 20, 2024
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Chapter 12.5: An excerpt from the sleepover
Jun 19, 2024
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Chapter 12: Sleepover
Jun 19, 2024
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Chapter 11.5: Volume 1 Extras
Jun 25, 2024
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Chapter 11: Weakness
Jun 17, 2024
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Chapter 10: Cafe Ghost
Jun 16, 2024
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Chapter 9: Such an idiot
Jun 15, 2024
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Chapter 8: A Capable Man
Jun 12, 2024
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Chapter 7: Photo Booth
Jun 10, 2024
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Chapter 6: Means of hiding
Jun 9, 2024
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Chapter 5: Reason for applying
Jun 6, 2024
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Chapter 4: Ahhn
Jun 5, 2024
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Chapter 3: Set in stone?
May 31, 2024
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Chapter 2: A ways to go
May 30, 2024
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Chapter 1: The Promise
Aug 25, 2023
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