do dokkaebis know about regression? [webtoon]

ive read a bit into the novel after the webtoon, but im rereading the webtoon again,

do dokkaebis know about regression, and how are the constellations not suspicious of junghyeok at the subway / early scenarios?

https://preview.redd.it/6vv34us18w4g1.png?width=1192&format=png&auto=webp&s=cfc3a2f8fac35bf76f595b6cbb6865c9af054c13

(ive read other posts and know constellations dont know about regression.)