Gacha

Sol's voice chimed in his mind, laced with amusement. [The saying, 'Ignorance is bliss,' really is true.] Sol chuckled. [If she knew that your professor is the avatar of the Succubus Queen and is trying to turn you into her puppet, she wouldn't call this an opportunity.]

"Shut up," Arthur muttered, rubbing his temples. "And suggest something useful, would you?"

[There's no 'useful' suggestion here,] Sol quipped. [Your best bet is to trust your luck and try using the system's gacha feature.]

Arthur frowned but relented. "Fine, let's give it a shot. Open the gacha panel and explain the rules."

In response, a holographic system window materialized before him, displaying a large circular wheel divided into sections of various colors. The grey section dominated nearly half the wheel, followed by smaller blue, violet, purple, red, and gold segments.