WARNING: The following contains spoilers for Chapter 66 of Boruto: Naruto Next Generations, “Do-or-Die,” by Masashi Kishimoto, Mikio Ikemoto, Mari Morimoto and Snir Aharon, now available in English from Viz Media.
Things got dark in Chapter 66 of Boruto as the young teen Kawaki made a bold move to stop Momoshiki from fully possessing Naruto's son. Kawaki, having accessed the power of his new Karma mark to basically become a more self-aware Isshiki Ōtsutsuki, impaled Boruto and seemingly killed him, touting it up as the move that'll save the shinobi world. However, while it's unlikely Boruto is dead, this will definitely shatter Kawaki's bond with the Hokage.
Naruto fought tooth and nail to stop Kawaki from killing his boy, but Kawaki harnessed Isshiki's black rods and giant cubes, battering Boruto and desperately claiming it as a last resort. Boruto getting killed would ensure that Momoshiki wouldn't be reborn, while also removing a potential sacrifice that Code could use with the Ten Tails to bring the God Tree back and destroy the world.
Still, Naruto kept yelling for Kawaki to find a new solution because he had hope and belief. It's Naruto's style, after all, as seen with so many villains over the years. Whether it's inspirational speeches or beating them to the point of death, Naruto always felt like redemption loomed closely, ergo his no-kill policy. Even when the option was presented to him regarding Momoshiki consuming Boruto's mind, body and soul, the Konoha leader rebuffed the thought of murdering his son for the greater good.
To him, giving up was inhumane and not the way of shinobi charting the future of the Hidden Leaf. What he didn't count on, though, was the secret pact Boruto made that encouraged Kawaki to kill him. He knew if he lost control and Momoshiki came back, the apocalypse could occur, so he asked Kawaki to do what Naruto could never.
That's why he shoved Naruto off with the Gale Palm Wind Jutsu, allowing Kawaki's super-fist to bore a hole in him. But as Boruto bled out motionless, it's hard to see Naruto forgiving Kawaki, with punishment possibly coming in the form of emotional abandonment. Naruto adopted Kawaki when everyone else warned that the kid was a heartless WMD, so this proved them right as Kawaki disobeyed the one person he worshipped. Ironically, this may foreshadow the tragedy that opened the Boruto series.
It's known that Kawaki and Boruto will do battle when the former ravages Konoha years down the line, boasting how he murdered Naruto too. This might just be the catalyst for it all, because when Boruto survives, Naruto may place more focus on curing his kid.
Seeing as he would be scared of losing a child, he'd devote more love, time and energy to Boruto, and this lack of attention could be misconstrued as Naruto no longer loving Kawaki. It can make Kawaki jealous and feeling like he's been abandoned physically as well, with Naruto finally breaking and thinking deep down, that maybe the black sheep was really a monster inside all this time.
