Nana

The Nana watch order couldn't be simpler: a single 47-episode series from Madhouse, with no movies, OVAs or specials to sequence. Start at episode 1 and watch straight through to episode 47 — that's the entire anime. The show follows two young women who share the name Nana as their lives intertwine in Tokyo, tracing their friendship, music and romances across one continuous run. Because there are no side stories or films to interleave, there's nothing to reorder and no risk of watching anything out of place; the correct order is simply the natural episode sequence from beginning to end. If you're wondering where to start, episode 1 is the only entry point. Note that the anime adapts part of the manga and ends without a full conclusion, so readers often continue the story in print afterward, but for the anime itself these 47 episodes are the complete chronological watch order.