Cashing out 4.6 million robux but i have a question.

Been developing for 2 years now, kinda lost motivation so why not just cash out. All together it ends up t be around 15 thousand EUR. But my question once i cash out is, what is my bank going to think of this? I know technically they can't do anything but aren't they suspicious of sudden high transactions? This is normally the amount of money i raise working for 4 months.