"Nasthalic" refers to a specific type of nostalgia characterized by a bittersweet longing for a time or place that one has never actually experienced. It often evokes feelings of yearning for an idealized past that exists only in imagination or cultural memory. This sensation can be triggered by art, literature, or media that depict a bygone era or lifestyle. The term suggests a deep emotional connection to a past that feels familiar yet remains unattainable.