If you loved Death Note Relight 2: L's Successors, try Attack on Titan: Crimson Bow and Arrow
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Death Note Relight 2: L's Successors
→
Try this next

Attack on Titan: Crimson Bow and Arrow
What they share
Both films are directed by Tetsuro Araki, and they sit in Animation / Fantasy territory. If that's the register that drew you to Death Note Relight 2: L's Successors, the second film will land in a comparable space — through a different lens.
What Attack on Titan: Crimson Bow and Arrow is
You wake before dawn to join the cadet corps on the wall’s parapet. A six-meter Titan lopes toward the gate but stops at sunrise, leaving the city unharmed. That evening your armory burns and the wall’s second layer collapses under a second attack. Recruit training pivots into survival drills as the horizon fills with shrieking shadows.