I know he's Level 6, I didn't say that he was still Level 5, I said "He finally levels up" as in Bete is Level 6. "But Bell had gone up 2 levels by the same time" as in Bete +1 level = Bell +2 levels (this is what I stated)
Otaku4469 wrote: You are wrong in your assumption Bete levelled up at the same time when Ais did take note it happened during the Expedition to the 59th floor.
I don't think you understand what I meant there. Since Bete grew to Level 6 as Bell got to Level 2. But a month afterwards Bell grew another Level. So when I said about the same time, I refer to the short period of a few months.
It doesn't mention how long bete had been Level 5, but it can be safe to assume that it look him 3 or 4 years too.