Boruto is the only one who senses that something is wrong. Due to their shared Ōtsutsuki nature, he realizes the "Kawaki" in the house is a clone and that the real one has left the village.
A summary of the to see what happens when they meet Code B0rut0 N4rut0 N3xt G3n3r4t10n5 - 290.mp4
His extreme desire to protect Naruto leads him to take dangerous, independent risks. Boruto is the only one who senses that something is wrong
Kawaki feels frustrated by the surveillance and decides to protect Naruto on his own. He successfully erases his chakra signature—a natural ability for Ōtsutsuki—to slip past the sensory ninja, Nishi. B0rut0 N4rut0 N3xt G3n3r4t10n5 - 290.mp4
Boruto intentionally lets his own chakra be sensed so Naruto and the sensory team can follow him as he tracks Kawaki's location outside the village.