I think 'Attack on Titan' is a good example. It stays true to the comic's tone and storylines, although there might be some minor tweaks for the sake of animation and pacing. But the core elements remain intact.
One of the shows that comes to mind is 'Fullmetal Alchemist'. It's widely regarded as having a very loyal adaptation that captures the essence and plot of the comic accurately.
Chapter 500, "Getting Information", is the clearest early answer because it turns Damien's situation into a concrete plot event. The setup is Its chest rose and fell in shallow, uneven motions, every inhale..., but the pressure keeps building through Its once-proud frame was broken, limbs bent at wrong angles, demonic....
Chapter 114, "New House, New Rules, New Beginning [Four-in-One Mega Chapter]", is the clearest early answer because it turns Logging Team's situation into a concrete plot event. It opens with This new regulation, generally speaking, currently targets only the... and closes on Going out once every night earns one Contribution Point; bringing....
Chapter 149, "Supreme Combat Body, The Dangerous Gao Yu【Please Vote】", is the clearest early answer because it turns Gao Yu's situation into a concrete plot event. The chapter turns that into something concrete by moving from Considering Great Xia's current activity area, a Cold Resistance... to This person's fleeing was still being hunted by an Intermediate....
Chapter 106, "Expanding Hunting Grounds, Camp Expansion [3-in-1]", is the clearest early answer because it turns Logging Team's situation into a concrete plot event. The chapter gives readers a real answer by opening on Xia Hong made up his mind and quickly gathered Xia Chuan, Luo Yuan,... and ending on Six months ago, with a Hunting Team composed of fifteen Logging....
Chapter 115, "New Earth-digging Realm, Enhancing Mining Efficiency [Three in One]", is the clearest early answer because Xia Chuan finally turns buildup into a real advancement. It opens with On the third day of moving into the new residence, on the second... and closes on What's your estimate, how many people can this wooden house.... The key payoff is that the chapter closes with It's not that they are vain; it's mainly because the camp now has the conditions.
Chapter 106, "Expand the Hunting Grounds, Camp Expansion [3-in-1]", is the clearest early answer because it turns Demon Sheep's situation into a concrete plot event. The setup is With weapons in the Logging Realm, at most you gain some self-defense..., but the pressure keeps building through When equipped with ten-forged weapons, they can truly break through....
Chapter 498, "A Demon With Intelligence", is the clearest early answer because it turns Damien's situation into a concrete plot event. The chapter turns that into something concrete by moving from Damien and Garrick didn't see these ones at first. to The demon watched Garrick go, then turned its attention fully back to....
Chapter 125, "Newborn, Yue Yuan", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. A useful checkpoint is the way the scene starts with As soon as Xia Hong and his group retreated, the area near the... and follows through with Let's call him, Yuan." "Yue Yuan!.
Chapter 147, "Total Kill, Confrontation Cold Resistance Level [Killing Spree Chapter, Seeking Monthly Tickets]", is the clearest early answer because the violence around Total Kill becomes final instead of hypothetical. The setup is Don't kill them all, leave some alive!" Xia Hong ignored the look in..., but the pressure keeps building through Just now he dared to stop swinging his giant axe and focus on....
Chapter 394, "Fixing What She Ruined", is the clearest early answer because it turns Godsthorn's situation into a concrete plot event. The setup is The clamor of battle raged across the outer academy, and yet, within..., but the pressure keeps building through Dean Godsthorn appeared once more before the central core vault..