The highly anticipated theatrical anime film, "Mobile Suit Gundam: Hathaway's Flash - Circe's Witch," which officially premiered on January 30, 2026, has just dropped a bombshell: its ending theme will be none other than the iconic track "Sweet Child O' Mine" by legendary rock band Guns N' Roses! This epic crossover has immediately sent shockwaves through both the anime and music worlds. 
"Sweet Child O' Mine," originally released in 1987, stands as one of Guns N' Roses' most iconic masterpieces. With Slash's legendary guitar intro and a melody that perfectly blends raw power with heartfelt emotion, it's become a timeless rock anthem for generations. Not only did the track hit #1 on the US singles chart, but its music video has also racked up over 2.1 billion views on YouTube, continuing to break records for 80s songs to this day.
According to official statements, the choice of this classic track as the ending theme isn't just a publicity stunt; it's a deeply emotional fit. The song's themes of tenderness, longing, and complex, ineffable emotions perfectly echo Hathaway's internal turmoil in the film, sparked by his encounter with Gigi. This makes the ending sequence a crucial extension of the movie's emotional resonance.
What's more, the official team has announced that a special promotional video, cut to "Sweet Child O' Mine," will drop on February 2, 2026. Fans can look forward to experiencing the Gundam series' signature weighty worldview intertwined with the rock anthem's unique vibe, all through fresh new visuals.
Since its first chapter premiered in 2021, the "Hathaway's Flash" series has earned critical acclaim for its realistic, brutal combat depictions and intricate character psychology. This latest installment continues that foundation, but with a groundbreaking musical choice that injects an unprecedented emotional depth into the series. The official team invites audiences to hit the theaters and witness firsthand the electrifying synergy between a world-class rock classic and the Gundam universe.