The twins immediately opened the upgrade list and selected the Soul Connection Range option.
[Soul Connection Range Upgrade Level 9: 27100 Celestial Points] (One Billion Light Years)
So far, their Soul Connection Range could allow them to use the Celestial Soul System within a million light-years, so a billion was a huge upgrade. It's just that a million had been way more than enough so far. Nonetheless, Rean did as Roan said.
[Celestial Points: 329301]
[Confirm Purchase?]
"Yes!" They answered.
For a moment, Rean, Roan, Celis, and Kentucky felt a reaction within their Soul Connection. It didn't last long, as it was the same as the previous upgrades. Then, the system announced.
[Upgrade completed.]
"Alright, a billion it is," Rean said.
Roan ignored that. "Let's check the next level and what it does."
They opened the list once more, and sure enough, the next level appeared there. However, there was a change this time. It didn't say Soul Connection Range Level 10, instead...
