Kakkoi Onnanoko to 12 cm no Yakusoku 
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Description
A boyish childhood friend grows up to be a super handsome girl! The serialized version of a Tomboy X Boy romance story. https://www.cmoa.jp/title/280310/
Type
Manga
Related Series
Kakkoii Onna no Ko yori Kakkoyoku Narou to Suru o-Hanashi (Alternate Version)
Associated Names
12cm Promise With a Cool Girl
A Cool Girl and a 12cm Promise
Kakkoii Onnanoko to 12-centi no Yakusoku
Promise of 12cm With Cool Girl
カッコいい女の子と12センチの約束
Groups Scanlating
Latest Release(s)
c.51 by Left Field Scans 1 week ago
c.50 by Left Field Scans 1 month ago
c.49 by Left Field Scans 2 months ago
Search for all releases of this seriesStatus in Country of Origin
3 Volumes (Ongoing)
Completely Scanlated?
No
Anime Start/End Chapter
N/A
User Reviews
N/A
Forum
0 topics, 0 posts
Click here to view the forumUser Rating
Average: 6.7 / 10.0 (26 votes)
Bayesian Average: 6.46 / 10.0
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Last Updated
September 16th, 2025 11:36am PDT - 3 months ago
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Genre
Categories
Category Recommendations
Recommendations
N/A
Author(s)
Artist(s)
Year
Original Publisher
Serialized In (magazine)
Ganma! (ComicSmart)
Licensed (in English)
Yes
English Publisher
Activity Stats (vs. other series)
Weekly Pos #763 
(-36)
(-36)Monthly Pos #1523 (-263)
(-263)3 Month Pos #3037 (-68)
(-68)6 Month Pos #3495 (-218)
(-218)Year Pos #3914 (-288)
(-288)List Stats
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