Man, 'Unlimited Fafnir' holds a special place in my heart! The anime adaptation wrapped up with a decent conclusion, but the light novels actually continued the story beyond where the show left off. The LN series, written by Tsukasa, concluded with Volume 15, giving a proper finale to Yuu and the Dragon girls' journey.
That said, I’ve been scouring forums and publisher announcements for years, hoping for a sequel anime or even a spin-off, but nothing concrete has surfaced. The LN’s ending felt satisfying, though—tying up most loose ends while leaving just enough room for imagination. Maybe one day, if fan demand spikes, we’ll see a reboot or OVA. Until then, I’ll keep rereading my dog-eared copies of the novels!