In *Forgotten Island*, “Tayo na!” is a recurring phrase shared by teenage friends Jo and Raissa, whose relationship is strained by Raissa’s impending move abroad. Its meaning shifts between “Let’s go!”, “You and me!” and “Get up!”, becoming a private command that urges them to face danger, adventure and difficult emotions together.

The phrase reflects different Tagalog pronunciations and contexts, while the film lets viewers infer its meaning rather than explaining it directly. Voice actors H.E.R. and Liza Soberano drew on memories of Filipino relatives using the expression, interpreting it as a promise of commitment: once said, neither friend can back down. Their Filipino heritage also influenced small details in the script, including Jo’s “cheapney” joke referencing Manila’s jeepneys.