For manga readers, Episode 290 is a divergence point. In the Boruto manga (Chapter 71), the "surprise attack" lasts only a few panels. The anime adaptation expands 4 manga pages into a full 23-minute episode.
: During a conversation with Shikadai and Inojin, Kawaki learns how the Konoha Sensory Unit tracks people. Inojin notes that it is impossible to track someone who can entirely erase their chakra signature. Because Kawaki possesses Ōtsutsuki DNA, he realizes he can do this naturally.
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It looks like you're asking for a for Boruto: Naruto Next Generations Episode 290 in 720p (likely the subtitle "M..." refers to a fansub group like Msubs or Muxed ).