Roger hadn't yet come up with an excuse when Jora took the initiative to seek him out, voicing her concerns.
"When advancing to the Fifth Tier, there will be a dramatic energy surge. It's impossible to hide this from Heyman's spies. If we want to conceal this breakthrough, we must make thorough preparations."
Neither Roger nor Sonia had much experience in this regard. Roger initially thought to find a chance to quietly leave the valley, allowing Sonia to advance to the Fifth Tier, and then proceed seamlessly to prepare for the ritual.
But now it seemed that, at least during the breakthrough, he would still need Jora's assistance. If Heyman appeared halfway through the power surge...
Roger feared he wouldn't be able to handle it alone.
"The volcano we're in has some rather unique properties. Beneath it, unknown forces linger. I can try to detonate some of its energy ahead of time and carve an Array underground as camouflage."