FLOW to Power Reborn as a Space Mercenary Opening Theme, Asterism Joins for ED

FLOW, the powerhouse band behind iconic themes for Naruto and Code Geass, will perform the opening song "Unstoppable" for the upcoming Reborn as a Space Mercenary anime. This is a huge win for the sci-fi isekai series, promising the high-octane energy FLOW is famous for. Their track record with anime anthems speaks for itself; fans know they’re in for a treat.
Joining them is the rising instrumental metal band Asterism, who will deliver the ending theme "My Way." Known for their technical prowess and heavy sound, Asterism's involvement hints at a dynamic close for each episode. This duo of established veterans and exciting newcomers sets a compelling musical stage for what's sure to be an adventurous journey through space.
The Reborn as a Space Mercenary anime follows an ordinary salaryman reincarnated into a sci-fi world, quickly becoming entangled in mercenary work. The series is part of a growing trend of "space isekai," blending familiar reincarnation tropes with futuristic settings. With these theme song artists on board, the anime is certainly gearing up for a strong launch.
“FLOW, a powerhouse of anime anthems, will deliver the opening theme "Unstoppable" for the upcoming sci-fi isekai.”
Catzye Take
This is a fantastic pick for Reborn as a Space Mercenary. FLOW consistently delivers high-energy tracks perfect for action-packed series, and their involvement here really sets the tone for what we can expect from the anime's vibe. Keep an eye on Asterism too; their heavy sound could make for a memorable closing.
Newsletter
Stay in the loop
Weekly digest of the top manga & anime stories. No spam, unsubscribe any time.
People & Places
Want to learn more?
Read our complete Anime guide →





