なかには気難しい人がいる。

inside; in; among; within; center (centre); middle; during; while

at (place, time); in; on; during; to (direction, state); toward; into; for (purpose); because of (reason); for; with; by; from; as (i.e. in the role of); per; in; for; a (e.g. "once a month"); and; in addition to; if; although

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

hard to please; moody; crusty; fastidious

man; person; human being; mankind; people; human (Homo sapiens); humans as a species; character; personality; man of talent; true man; another person; other people; others; adult

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

to be (of animate objects); to exist; to stay; (after the -te form of a verb) verb indicating continuing action or state (i.e. to be ..ing, to have been ..ing)