Are PR1 ships in Azur Lane still worth building in 2026? In this video, we take a deep dive into Saint Louis, Roon, Monarch, Izumo, Neptune, and Ibuki — analyzing their strengths, weaknesses, and how their augment modules change the game. From campaign maps to event bosses and Operation Siren, we’ll uncover whether these first‑generation Priority Research ships can still hold their ground against modern fleets.