There are four things that look like beetroots in "Floating Island Story". They are actually beetroot. Killing them can get 75 beets and an achievement. When you beat them, they will also A cute dialog box will pop up.
Answer: It can mainly be used to kill and obtain beets and achievements.
After killing four radish spirits, you can get 75 beets and an achievement of "kill all giant beets". This beet field can be used to grow things, and the beetroots can be sold for money.