"Spirit age is relative to power but it can also differ from the spirit itself, some might reach the high spirit realm in just 5,000 years while some take 10,000 years. It all depends on the constitution of the spirit"
Upon hearing the explanation, Rex face-palm himself.
Back when he asks the system for a recommendation, he specifically said the spirit's age must be near Devo's age and also will be able to help his Lunar Dust Illusion. It's his wording that is wrong, he didn't know before but now he knows.
'I should've just said as strong as Devo instead of age...'
Although he finds this small mistake turns out to be a bigger mistake than he anticipated, he can't dwell on his past especially when he already assimilated with Amanir. Soon a small squeaky voice appears inside Rex's head, [W-Where am I?!]
[No... you cheated, you use a cheat to stop me from moving!! Let me go right now!]