When Andrew heard that it was a divine weapon, he was so surprised that he practically jumped out of his seat. On the other hand, Aki, who couldn't see or hear Fluffy, was puzzled by her master's behavior.
Fluffy was a divine beast, although for Andrew he was just a convenient system operator, he was not really a simple creature, only Andrew did not know it. In fact, if Fluffy wanted to, he could easily erase the existence of this world, he was that powerful.
Unfortunately, being assigned to Andrew as a helper, he was not allowed to use his power, but for protection, he was allowed the ability to hide, so that was the reason no one other than Andrew could see him.
To be more exact, any other god candidate, divine beast, or god could see it, but the chances of any of them appearing in this world were as slim as the grains of sand in the universe.