One of the best is 'The Dark Knight Returns' by Frank Miller. It reimagined Batman in a darker, more gritty way, and had a huge impact on the character's future portrayals. It showed an older Batman coming out of retirement to clean up Gotham again, with great art and a compelling story.
Definitely 'Watchmen' by Alan Moore. It's a deconstruction of the superhero concept. The complex characters, intricate plot, and moral ambiguity make it a masterpiece. It's not your typical superhero story but rather a deep exploration of power, morality, and the human condition in a world with 'superheroes'.
The 'Civil War' storyline in the Marvel Universe is also great. It divided the superhero community over the Superhuman Registration Act. This led to intense battles and moral dilemmas as heroes had to choose sides, whether to support registration and government control or oppose it for freedom.
Chapter 246, "Betting He Can't Last Even One Second", is the clearest early answer because it turns Brother Shaojing's situation into a concrete plot event. Early on, At that moment, not only Su Yinwan but also Shang Shaojing's....
Chapter 350, "Methods to Enhance the Peak of Cold Resistance, Moao's 10th Town, Beishuo Yang Fa, Nightmare, East Ridge Lu Yun", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The chapter gives readers a real answer by opening on The first kind of Tiger Power Pill is unclear, but just by hearing... and ending on There is an inherent conflict between the two; smuggling infringes....
Chapter 115, "Jiang Yan's New Follower—Richard!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. It opens with Jiang Yan was woken by a loud crowing noise. and closes on [Pure bystander, wasn't Jiang Yan known as a notorious playboy?.
Chapter 145, "Director Sun, You Haven't Paid for the Meal Yet", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event.
Chapter 455, "She is Entirely My Weakness", is the clearest early answer because it turns Is Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The marathon-style competition ultimately ended with Shang Shuyue...
Chapter 147, "Jiang Li, We Are Going to Meet Again", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event.
Chapter 45, "Give a Sweet Date and Then a Slap", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Helplessly, Jiang Yan had no choice but to step on the accelerator.
Chapter 198, "Jiang·Deceitful·Li is Verified", is the clearest early answer because it turns Task Point's situation into a concrete plot event. The chapter turns that into something concrete by moving from He wrapped his arms around himself and stepped back half a step,...
Chapter 295, "Fan Meeting", is the clearest early answer because it turns Jiang Shixu's situation into a concrete plot event.
Chapter 306, "I Believe Whatever Miss Jiang Says!", is the clearest early answer because it turns Mrs's situation into a concrete plot event. A useful checkpoint is the way the scene starts with But Jiang Li seriously shook her head, "No, Aunt Zhou, this matter...