: He plays Gu-cheon, a master swordsman with the power to kill ghosts. : This is his first major project since Twenty-Five Twenty-One

: Following his military service, Nam Joo-hyuk is expected to make a "ghost-slaying" comeback in a new drama project slated for 2026.

The show is praised for its 1990s nostalgia, using pagers, payphones, and real-world events (like the IMF crisis and 9/11) to ground the fictional narrative in reality. noseinabook.co.uk Cast & Performances The cast is often cited as the show's strongest asset. Review: Twenty-Five, Twenty-One - The Fangirl Verdict

As of early 2025, no official remake has been greenlit. However, a Thai or Japanese remake is more plausible. The nostalgia for the 1990s is a universal theme, and a "new" cultural adaptation could introduce the story to a different demographic.