Talk:Mackerel/@comment-3502824-20171011045129/@comment-3502824-20171011053630

If you got extra onigiri lying around (like 6+ star onigiri that was upgraded for the free screws from daily improvement quest), then you could use it here, well on a ship's expansion slot if the ship you are using has it applied.

But they said it's "slightly", but maybe you should take the chances.

If putting it on main slot, don't do it o_o