WARNING: The following contains spoilers for Chapter 64 of Boruto: Naruto Next Generations, “Control,” by Masashi Kishimoto, Mikio Ikemoto, Mari Morimoto and Snir Aharon, now available in English from Viz Media.
In the Boruto series, one of the most daunting things plaguing the young shinobi has been his Karma mark and the probability of Momoshiki's possession increasing every time he taps into its power. He's done so out of desperation, as seen with the Boro fight, allowing the villain to surface, while chakra depletion, per the Isshiki brawl, also allowed Momoshiki to control his body. Now, in the latest chapter, Boruto seems to have mastered this powerful tool, making it more than a vessel without agency -- but the cost is dire.
This occurs in Chapter 64, "Control," in the woods outside Konoha as Code ambushes him and Kawaki looks to take the latter in to Eida. However, Boruto won't let Kawaki go willingly, despite how the teen doesn't mind sacrificing himself for Konoha, and more so, for Naruto to be safe. Kawaki considers the Hidden Leaf and the Land of Fire his true home now, and the Hokage his father, so it's worth the sacrifice.
Boruto, however, thinks Kawaki is being an idiot, and thus, he harnesses Momoshiki's power, knowing how powerful Code is with the alien clan's blood in him too. Both use their Ōtsutsuki energy, with Boruto's shadow clones being quite strong. His lightning-fast speed also takes Code by surprise. The tyrant can't believe he's using Momoshiki's power like this, which leads to a Vanishing Rasengan, almost destroying Code's frame.
The key to all this is the black pills Amado gave Naruto for the boy. The scientist, who worked as head engineer on all of Isshiki's Kara soldiers, offered the meds to slow the spread of the Ōtsutsuki DNA in Boruto, which has allowed the teen to not be a raging Hulk.
The boy keeps his sanity and is in control while using the abilities and raw nature of Momoshiki. It's the best of both worlds, but sadly, the suppression meds don't last long -- either that or they have an adverse effect, which Amado warned of, as they are still experimental capsules.
This leads to the selfless Boruto clutching his chest and falling to the ground as if he's suffering a heart attack. It seems as though there's a time limit akin to how Naruto ran out of juice after using his Baryon Mode, which led to Kurama's (the Nine-Tails Fox) death rather than his. It's a scary sight for Kawaki but a joyous one for Code, as his greatest enemy is now weak, vulnerable and grimacing in pain.
This confirms that the Momoshiki appropriation has as many downs as it does ups, and is in fact not a gift but a curse that Boruto should have ignored until his science team figured it out.
