The characters are drawn with high aesthetic appeal, emphasizing expressive eyes and subtle facial shifts that convey hidden motives.
Minji, who has always viewed Yuna as her anchor, starts experiencing vivid, erotic, and deeply unsettling dreams about her best friend. These "bad thoughts" spark an overwhelming wave of guilt and confusion. Meanwhile, Yuna—who is wealthier, colder, and fiercely protective—harbors her own intense, suffocating feelings for Minji. Bad Thinking Diary
Everything seems idyllic until Min-ji begins to experience a series of vivid, erotic dreams starring none other than Yu-na herself. Initially dismissing these "bad thoughts" as a product of loneliness, Min-ji decides to confess her strange dreams to Yu-na. This confession, which she expects to be met with laughter or perhaps a bit of friendly teasing, has an unexpected and transformative effect. It acts as a catalyst, subtly shifting the dynamics of their friendship and forcing them both to confront feelings they may have kept hidden for years. The characters are drawn with high aesthetic appeal,