What took everyone by surprise was that after listening to their rationalized "story background," Heine didn't agree to their request.
"Sorry, I can't let you go to this place."
His refusal was very straightforward.
"This is an entirely new Soul Realm, filled with too many unknown possibilities.
"If this were the real world, I would trust your abilities, and I could always protect your Soulfire at any moment.
"But in this place, what will the enemies look like? Are their attack methods predictable? Do you have the experience to fight against them? These are the concerns I must consider.
"Therefore, after hearing about this place and realizing you're also unfamiliar with it, I've decided to investigate it myself."
...
Zhuo Yang: "It's over, this blew up in our faces. I forgot this was our first time pretending 'to be unfamiliar with the new environment,' totally slipped my mind."