The antagonist<span> is in direct conflict with the main character in a </span>story, or the protagonist<span>. The </span>protagonist<span> usually undergoes some significant internal change in a </span>story<span>, but not always.</span>
There are many words to describe the condition asked in the question. Some of the words used to describe "to pay close attention to details and ask questions." are meticulous, punctilious, and scrupulous. Thoroughness. is also used for detailed study.