in depth//KOKORO: This came to me while I was listening to Kokoro (Vocaloid Original Song), and there was a Utada Hikaru version that someone made (using a custom voicebank they made up for her) that I really liked. Sometimes there are just songs that I hear and I just loop that one song for days and days, and I ended up putting Sasuke and Sakura (and Naruto, because I can't exclude him) into the sad story of the scientist and robot. I remember the MV being really sad especially the version where they had added dialogue. So the first questions Sasuke asked her, were inspired by that dialogue.

The story's very fragmented, made up of a series of drabbles, and a lot is left out too. I tried filling in the spaces here and there, but in the end, I decided not to fill in every single detail or go into every background--like how many "worlds" or "lifetimes" are intertwined in this one story (depending on the reader you can say two or three, but I prefer three) and how do they connect? Have the characters been reincarnated or something (because the summary seems to suggest it?) or what? Unless I make this into a multi-chaptered fic, I can't really explain all these things, but for this oneshot, I decided to just leave things as such.