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Description
Minji and Yuna were always together. From the age of 17 to now, until the age of 21, they have been each other's best friends. From that day on, the relationship subtly changes. It started with Minji's strange dream in which Yuna appeared! Their relationship begins to turn into something other than best friends.
Unrequited love, excitement, and obsession. "Bad thoughts" that grow one after another in each others mind.
Where will our "bad thoughts", which started on a lush college campus, end up?
Original Webtoon
Official Translations:
English, Japanese, Arabic
Unrequited love, excitement, and obsession. "Bad thoughts" that grow one after another in each others mind.
Where will our "bad thoughts", which started on a lush college campus, end up?
Original Webtoon
Official Translations:
English, Japanese, Arabic
Type
Manhwa
Related Series
N/A
Associated Names
BAD THINKING DIARY:バット・シンキング・ダイアリー
坏想法日记 / 闺蜜至亲 / 坏思想日记
배드띵킹 다이어리
坏想法日记 / 闺蜜至亲 / 坏思想日记
배드띵킹 다이어리
Groups Scanlating
Latest Release(s)
c.60 by AksyScans about 1 year ago
c.59 by THE BLANK & AksyScans about 1 year ago
c.58 by THE BLANK about 1 year ago
Search for all releases of this series
c.59 by THE BLANK & AksyScans about 1 year ago
c.58 by THE BLANK about 1 year ago
Search for all releases of this series
Status
in Country of Origin
60 Chapters + Review (Complete)
Lezhin US did not translate the review
Lezhin US did not translate the review
Completely Scanlated?
Yes
Anime Start/End Chapter
N/A
User Reviews
N/A
Forum
0 topics, 0 posts
Click here to view the forum
Click here to view the forum
User Rating
Average: 6.9 / 10.0 (88 votes)
Bayesian Average: 6.75 / 10.0
Bayesian Average: 6.75 / 10.0
10
14%
9+
15%
8+
15%
7+
20%
6+
11%
5+
9%
4+
5%
3+
3%
2+
1%
1+
7%
Last Updated
May 6th 2024, 2:34am
Image [Report Inappropriate Content]
![](https://cdn.mangaupdates.com/image/i386825.jpg)
Genre
Categories
Category Recommendations
Recommendations
N/A
Author(s)
Artist(s)
Year
2022
Original Publisher
Serialized In (magazine)
N/A
Licensed (in English)
Yes
English Publisher
Activity Stats (vs. other series)
Weekly Pos #494
(+128)
Monthly Pos #937
(-50)
3 Month Pos #782
(-171)
6 Month Pos #718
(-361)
Year Pos #572
(-556)
![increased](/images/stat_increase.gif)
Monthly Pos #937
![decreased](/images/stat_decrease.gif)
3 Month Pos #782
![decreased](/images/stat_decrease.gif)
6 Month Pos #718
![decreased](/images/stat_decrease.gif)
Year Pos #572
![decreased](/images/stat_decrease.gif)
List Stats
On 202 reading lists
On 123 wish lists
On 115 completed lists
On 14 unfinished lists
On 103 custom lists
On 123 wish lists
On 115 completed lists
On 14 unfinished lists
On 103 custom lists
Forum Posts Click to view the forum
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User Comments
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![avatar](https://cdn.mangaupdates.com/avatar/a58569.png)
bruh
by arrica
June 30th, 2024, 3:06am
June 30th, 2024, 3:06am
Rating: 5.0 / 10.0
This is all lowkey spoilers so beware but like,
Overall, mainly a rant. Could've lived my life peacefully not reading this.
Tdlr/spoiler free: don't read this yo, just read any other smut if you came for yuri r18. Reading this made me wanna hurt myself and others 👍
... Last updated on June 30th, 2024, 3:25am
Spoiler (mouse over to view)
idk if I'm just Hella petty but, why is MC lowkey a cuck 😭😭
I don't mean FLs past experience, but that one red head girl just stole her away and only when near her did the MC get mad. The redhead stole her girl, ruined her reputation, and is generally just nasty, but 'awww the ugly pink girl lied to you and made youe sad??? 🤕😟🥺🥺🥺 we forgive you, here's a cookie and here's a kiss. We are all cool now, no bad blood 😊😊😊😊😊😊" like wtfreak hello??? I'd end that women's life personally
And why is FL so damn spineless 😭😭 girl had no problems getting many FWB but for reasons I don't even remember why just didn't speak up, or AGREE WOTH THE 'SLANDER' that supposed ruined mcs reputation. And why MC forgive FL for dumping her temporarily for redhead??? This is why MC is a pseudocuck.
Don't get me started on that pink haird women. Every day I thank all the gods, deities and whatever up above for letting me not being dumb and blinded by 'beauty' (saying that made me sick). There is no damn way I'm feeling g bad for her or liking her in any sense, she is annoying and I hate her. Her personality ruins her face, her hair, her clothes, her eyes, her everything. I wanted to do unspeakable things to her that would leave Jeffrey Dahmer, or whatever his last name was, disgusted. And I LOATHE that they let her get away with what she did (even tho in the grand scheme of things, I don't even know why the two broke up momentarily 😭😭😭). And their reunion was TERRIBLE.
'Babe... I dumped you and hung out with this girl, acted like she was my girlfriend and didn't consult you, and ignored you... I sowwy... 🥺🥺🥺🥺' and MC just took thag damn excuse, like what 😭😭😭
I don't mean FLs past experience, but that one red head girl just stole her away and only when near her did the MC get mad. The redhead stole her girl, ruined her reputation, and is generally just nasty, but 'awww the ugly pink girl lied to you and made youe sad??? 🤕😟🥺🥺🥺 we forgive you, here's a cookie and here's a kiss. We are all cool now, no bad blood 😊😊😊😊😊😊" like wtfreak hello??? I'd end that women's life personally
And why is FL so damn spineless 😭😭 girl had no problems getting many FWB but for reasons I don't even remember why just didn't speak up, or AGREE WOTH THE 'SLANDER' that supposed ruined mcs reputation. And why MC forgive FL for dumping her temporarily for redhead??? This is why MC is a pseudocuck.
Don't get me started on that pink haird women. Every day I thank all the gods, deities and whatever up above for letting me not being dumb and blinded by 'beauty' (saying that made me sick). There is no damn way I'm feeling g bad for her or liking her in any sense, she is annoying and I hate her. Her personality ruins her face, her hair, her clothes, her eyes, her everything. I wanted to do unspeakable things to her that would leave Jeffrey Dahmer, or whatever his last name was, disgusted. And I LOATHE that they let her get away with what she did (even tho in the grand scheme of things, I don't even know why the two broke up momentarily 😭😭😭). And their reunion was TERRIBLE.
'Babe... I dumped you and hung out with this girl, acted like she was my girlfriend and didn't consult you, and ignored you... I sowwy... 🥺🥺🥺🥺' and MC just took thag damn excuse, like what 😭😭😭
Overall, mainly a rant. Could've lived my life peacefully not reading this.
Tdlr/spoiler free: don't read this yo, just read any other smut if you came for yuri r18. Reading this made me wanna hurt myself and others 👍
... Last updated on June 30th, 2024, 3:25am
![avatar](https://cdn.mangaupdates.com/avatar/a65631.jpg)
Dropped
by chapschapschaps
June 13th, 2024, 10:59am
June 13th, 2024, 10:59am
Rating: 6.0 / 10.0
I LOVE the artstyle but the plot could be better;/ I dropped after sometime, I cant even remember when. I honestly prefered the other girl..
![avatar](https://cdn.mangaupdates.com/avatar/a0.gif)
The rating is clearly because it is wlw.
by babyfevergirlie
January 17th, 2024, 2:21am
January 17th, 2024, 2:21am
Rating: 9.0 / 10.0
Friends to lovers type of story. Loved Minji and the lovely and toxic Hyena, Yuna was really not it. The art was amazing, the plot could definitely be better but I appreciate the good art wlw stories.
![avatar](https://cdn.mangaupdates.com/avatar/a53068.jpg)
Rushed ending, but not bad
by pipitmac
October 15th, 2023, 8:36am
October 15th, 2023, 8:36am
Rating: 7.0 / 10.0
I've finished reading "Bad Thinking Diary." I was initially reluctant to read it because I couldn't stand the drama at the beginning 🙄. There were too many misunderstandings, and the lack of communication made me frustrated 😬. But then I continued reading; it wasn't bad at all. There was progress, I thought they would keep being some kind of friends with benefits or sex buddies until chapter 99 or something like that 🤣.
The good thing about this manhwa is the artwork, which is superb, and the steamy scenes are quite hot. But regarding the story, meh. There were many funny and sweet moments from the main couple that were quite entertaining, but the rest was just average. The ending felt rushed, like it got axed or something. It lacked resolution.
There was potential for Hyera's character development, but it didn't happen here. The ending was just them meeting at a drinking party and that's it. Like, seriously? Just like that?
... Last updated on October 15th, 2023, 10:23am
The good thing about this manhwa is the artwork, which is superb, and the steamy scenes are quite hot. But regarding the story, meh. There were many funny and sweet moments from the main couple that were quite entertaining, but the rest was just average. The ending felt rushed, like it got axed or something. It lacked resolution.
There was potential for Hyera's character development, but it didn't happen here. The ending was just them meeting at a drinking party and that's it. Like, seriously? Just like that?
... Last updated on October 15th, 2023, 10:23am
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