The term 'Delulu' originated within K-pop fan communities around 2013, initially used to describe fans with unrealistic beliefs about their relationships with idols. In late 2022, the term underwent a massive rebranding on TikTok, evolving into a positive mantra for manifestation and self-confidence. The viral phrase 'Delulu is the solulu' suggests that maintaining a high level of confidence—even if it's technically delusional—is the key to success and happiness. Today, it is a staple of internet culture used to poke fun at romantic overthinking and the power of positive (if slightly unrealistic) thinking.