This is the event in the manga that shocked all of us. I mean there were theories and spoilers circulating that Kawaki will have to powers of Urashiki Otsutsuki as he has somehow managed to kill him and thus has an Otsutsuki clan seal. But, I think now that we have seen a portion of Kawaki’s Karma seal abilities, the theory seems to be in serious doubts.
As the name of the chapter “Resonance” suggests that there is a connection between the seal of Kawaki and Boruto Uzumaki as they both activated at the same time. We then saw Garou trying to use ninjutsu but Kawaki was easily able to absorb it with his Karma seal and then Kawaki finished Garou off with a huge blast. This was a never seen before technique and honestly, I don’t know what to call it thus far. I’m hoping to see some more techniques of this sort from Kawaki.