What was Kurisu going to say to Okabe in the first episode? I finished the anime and I still wonder what Kurisu said to Okabe in the first episode.

She pulls Okabe out of the conferance and says "Back there, you were going to tell me something, weren't you?" and Okabe responds "Back there?". Kurisu says "About fifteen minutes ago" and Okabe says "I don't have the slightest idea".

I guess it has (spoiler for the end of the anime)


   something to do with time travel and world line travel in episode 23 and 24 but unfortunately I didn't watch those episodes that carefully.


However, what did Okabe intend to say to Kurisu, and where, and when?
Around 9 minutes into episode 24 (try watching from 08:30), Okabe from the future (episode 24 Okabe) bumped into Kurisu on the stairs in the radio hall building. He was going to say he would save her, but got interrupted by an announcement over the PA system and ran off.

In episode 1, Kurisu dragged Okabe (episode 1 Okabe) from the lecture, asking what he was going to tell her "about 15 minutes ago". He didn't know as he was episode 1 Okabe and the one she met was episode 24 Okabe.

If you don't understand how that works... Well, that's time travel for you.