Board Thread:Episode Discussions/@comment-25319479-20170920093317/@comment-9782468-20170922015242

Lorenzo.r.2nd wrote: it takes almost 3 month for a prodigy, like sasuke, to use chidori, which is basic in itself, but requires huge chakra lvls as well as control. almost 3 months for someone like sasuke, who is a much, much bigger prodigy than boruto, to learn a 1 stepped jutsu. that just doenst make sense, since it took that long for sasuke, but barely a few days for boruto, who had no help whatsoever. its has been shown and stated, that u cant learn jutsu by urself, much less use nature techniques just cuz they look cool. that's my main problem. and those child prodigy of urs, all had teachers. boruto did not. u see how absurd that sounds? It took a month for Sasuke to both train his body to Rock Lee's speed and learn Chidori. He did that all in a month. Also, nowhere does it say Sasuke is a bigger prodigy than Boruto. For all we know, Boruto's aptitude for Ninjutsu exceeds Sasuke's at the same age. Probably the reason Boruto got lazy by the time of the Boruto movie.

You don't even know how many steps it took to learn Chidori. It's an extremely powerful and difficult jutsu. There's a reason no one besides the Raikages ever developed anything similar.

Also, converting your chakra to nature chakra is very difficult (Fire, Water without a source, etc). But manipulating elements that already exist is far easier. That's why the entire Shinobi Alliance was able to perform Earth Release with a basic jutsu after only being taught Hand Seals, despite many of them not having the Release associated with them. That's why it's easier to perform Water Release when you have existing water. That's why (I'm assuming) Boruto could learn the jutsu that made existing air go whoosh, as @UntappedRage put it.

Naruto learned the Jonin technique Shadow Clone Jutsu in a day. Sasuke learned Fire Release: Great Fireball Jutsu in a week without help, years before becoming a Genin. For Boruto to learn basic techniques within a few days is not hard to believe.