Emphasizes a specific item or action; 'even', 'if only', 'as long as'.
Long explanation:
The ~さえ grammar point is used to emphasize a specific item, person, or action, implying that it alone is sufficient, remarkable or an exception. It can be translated as 'even', 'if only', or 'as long as' in English. The formation differs depending on whether it is used with a verb, い-adjective, な-adjective, or noun.