You should check out 'The God of High School'. It has intense action and thrilling moments that keep you hooked. The world-building and the fight scenes are top-notch.
Some popular ones are 'True Beauty' and 'What's Wrong with Secretary Kim'. They're popular because of their engaging storylines and relatable characters.
You can try some adult-oriented comic websites. But be aware that accessing such content may have legal and ethical considerations depending on your region.