After some pondering, Jack said, 'I will go scout the tunnel out. You can go back to the surface if you want. I will call you when I'm ready to go again.'
'How are you going to scout it out?' Jet asked, before soon sending another follow-up. 'Oh, right. Your corporeal state.'
Jack nodded.
'Okay, call me when you need me, Jack boy,' Jet said and swam back to shore.
After Jet left, Jack decided to wait for the next energy pillar one more time, to make sure again that the interval truly was just ten minutes when no one entered the sinkhole. He practiced mana manipulation while using skills and spells to kill time. He received notification that his Mana Bullet had increased to 8 stars. He was rather surprised by the notification, he understood that the proficiencies needed for this spell were still quite a lot.
He decided to test it out. He opened his spell list, checked on a spell's required proficiency, and then cast that particular spell.
