You mean if Durarara is like No.6? They're fairly different. DRRR is adapted from light novels like No.6, but they're written from the viewpoints of different characters. There are a few you could say are the definite main characters, and others are side characters, but they're important, too. There are a lot of details, and some episodes will repeat the events in others, but they take place in a different part of the city with a different character. Eventually, the plot points intersect. It's an interesting way of telling a story, and I really enjoyed it! The costumes are all pretty simple but distinctive because it takes place in modern Ikebukuro. Most of the story is about the fighting among gangs in the city.
ahhh! ;w; oke ;w; I find it funny that you immediately associate me with no. 6 now, even though we also talked about other games and anime XD I do find that very interesting! I mean, I'm currently playing Resident evil 6 (like, really one of my favourite franchises besides golden sun )and there you can also play as different characters, and they all have their own story arc, and they also intertwine with eachother at some points, so that's really interesting ;W; how many episodes does durarara have? :3
I believe it's 26 episodes, but two of those are OVAs. I think it's episode 26, the second OVA, that has these two characters featured. They show up in the show in different outfits in the background, though.