1. Neji's death was when Kishimoto came up with Boruto
"He then explains that it was at this time when Kishimoto came up with the name of ‘Bolt’ for their son, which has a similar meaning to ‘Neji’ (screw), as a homage to the late uncle who brought his parents together."
2. The Boruto manga was not planned to be produced yet by the time of Neji's death (chapter 614)
"Kishimoto says that ‘if’ there is a manga about Bolt (nb: it wasn’t confirmed by this point), he wants to include scenes focusing on Neji. Kobayashi asks if it’s ok to mention something like this [project], and Kishimoto says that this is only hypothetical."
3. He intends for Hinata to be the main female character of Naruto
"Kishimoto explains that because he decided to make Hinata into the lead heroine a while back " (while back here is relative to Neji's death during the war)
4. What Sasuke would do after he left Konoha other than he'll fight Naruto again wasn't planned
"Kishimoto agrees and says that after writing his leaving arc, he was a bit frustrated because he didn’t know what to do with him anymore."
"Kishimoto said that because Sasuke was introduced as a rival character in the beginning, he also wanted the manga to end with Sasuke and Naruto fighting as rivals."
5. Teuchi (the ramen guy a.k.a the goat), or at least an early concept of him, was the first character created during the first draft (there were 3 in total) of what would later become the Naruto we have today
"Apparently he started out wanting to write a story about an old guy who owns a ramen shop and a young boy comes by, or something uninteresting like that. Other things also got mixed in with that like a story which was supposed to be really spectacular and it was about straightening up their lives and other emotive plots…"
6. He wanted to spend more times on missions and developing the worldbuilding that way instead shoving everything into the Chuunin Exams
"Kishimoto didn’t actually originally intend for that kind of setting. Originally he intended to focus on various missions that Naruto went on, meeting 4-man cells from other villages. The teachers of the 4-man cell would be Kakashis rival."
7. Orochimaru and his role in the Chuunin Exams wasn't planned and came from an editor
"But his editorial team told him to introduce a villain called Orochimaru in there that would stop the tournament from being finished instead."
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