Hatsune Miku is always carrying around an onion.

Does she use it as a replacement cane when she is tired?

Does she love Negi-kun?

Hatsune-san!

I don't even know if it's so she can stick it up her butt when she has a cold or not.

... However, it appears that it is not used as emergency rations...

The onion's function

Lesson 1