Either have Aiz control it to stay in his hand or imbue it into Hestia Knife and have Aiz keep it there or constantly resupply it. I don’t know when she loses control of her wind though, if at all.
I don't even know why you think she can control anything. Her Ariel is a raging stream of wind. The best she's shown is to direct the flow in the right direction, and that still won't help the wind stay in Bell' hand.
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u/Otherwise_Finding_34 9d ago
if we ignore the fact that Bell is not even a 10% of rescue team power lol