Bad Thinking Diary [work] Jun 2026

The narrative begins with a seemingly ordinary friendship. Min-ji and Yu-na have always been close, and Min-ji considers herself lucky to have someone so pretty and kind in her life. Everything seems perfect until Min-ji has a vivid, steamy dream starring none other than Yu-na herself. Confused and embarrassed, Min-ji chalks it up to loneliness and confides in Yu-na about her dream.

Describe the moment that sparked the bad thinking. Be factual, not emotional.

is a popular South Korean webtoon written by Hodang and illustrated by Rangri. Released on Lezhin Comics, this Girls' Love (GL) drama captured readers worldwide with its intense emotional conflicts, toxic relationship dynamics, and stunning artwork. The series explores the thin line between deep friendship and romantic obsession, making it a standout title in the modern romance webtoon landscape.

Hye-ra's character adds a layer of tension to the story. She is unafraid to explore dominant-submissive dynamics and actively participates in sadomasochistic practices. Her persistent interference, even after being repeatedly thwarted, provides ongoing conflict and fuels much of the narrative's angst. Bad Thinking Diary

But Yu-na's reaction is far from what Min-ji expected. Rather than being offended or uncomfortable, Yu-na begins acting strangely—her responses hint at a depth of feeling that suggests she might have harbored a secret affection for Min-ji all along.

As they grow older, the "innocent" affectionate gestures of childhood start to feel different, leading to intense inner turmoil, jealousy, and forbidden thoughts.

Jealousy acts as a third character in this webtoon. Both leads struggle immensely with seeing the other interact with outsiders, leading to spiteful decisions, secrets, and emotional retaliation. The narrative begins with a seemingly ordinary friendship

However, some readers have noted that the art, while beautiful, occasionally overshadows the storytelling. This is a subjective critique, but it's worth acknowledging that for many fans, the visual appeal is a significant part of the manhwa's draw.

For those ready to dive in, here’s the essential publication history.

Han Ji-hoon is introduced as Min-ji's old love interest—and he bears a striking resemblance to Yu-na. This detail is not accidental. Ji-hoon serves as a mirror, forcing both Min-ji and the reader to question whether Min-ji's attraction to him was always a substitute for her feelings for Yu-na. Confused and embarrassed, Min-ji chalks it up to

: An extroverted and somewhat naive 21-year-old student whose sudden dreams about Yuna spark the series' central conflict.

“Your first thought is a reflex. Your second thought is a choice.”

While it boasts a massive global fanbase, Bad Thinking Diary is equally famous for its controversial plot choices. It serves as a fascinating case study on how extreme emotional boundary-crossing and explicit "smut" can both elevate and fracture a romance narrative. The Plot: From "Best Friends" to "Bad Thoughts"

If you are interested in exploring similar webtoons, let me know. I can recommend titles based on your preferred tropes, such as , psychological thriller GL , or childhood friends drama . Share public link