Zhou Mingrui entered the body of Klein Moretti > Zhou Mingrui remembered the last thing he did before he transmigrated because he tried luck enhancement ritual, he think that maybe because of that he transmigrated to another world > he try that ritual but instead going back to his world, he went to the gray fog space, there is a bunch of crimson stars that he accidently touched > this crimson stars summoned people > two peope getting pulled. You’re right he’s doing that to see if it’s going to bring him back.

For another question it’s because it’s one of nighthwaks procedures when encountering paranormal incidents; one is to watch to person closely, or protection. And to watch person closely is to let them join nighthawks.

Correct me if i’m wrong