How will Climb activate his Seed of the Fallen?

Throughout the story, Climb is presented as weak, and while this is true, it's also false. Climb is someone without talent who scaled to the maximum level of his body. That's why Evileye tells him in Volume 5 not to abandon his humanity, as she recognizes that it's the only way for him to become stronger.

Currently, Climb is living in the tomb of Nazarick, but eventually he will have to leave. Now, to activate the seed, it is necessary to gain experience (sacrifices). Renner used orphans not out of malice, but because it was the most effective way to kill several people. Furthermore, she didn't even use a weapon; she used poison, since she had no way to kill so many people being just a princess. Now, Climb is a warrior; he can use his own hands to kill people. The most normal way for him to become a demon would be to send him to the Theocracy during the war to kill several civilians. But I have another theory for those who don't know: in Volume 14, Brain Unglaus took talented orphans and sent them to the Argland City-State Alliance. I think Climb will be sent to this country in Volume 18 and will be sent to kill these orphans and the last disciple of Vestura Cloff Di Lofan, Gazef's master, as a way to show his loyalty to the Sorcerer Kingdom.