Ghost

1. Spectre, Spirit, Phantom, Apparition
2. A faint trace of something
3. A slight chance or small possibility
4. [On TVs, displays, etc.] ◆ A thin image that appears close to the original image. In televisions, this occurs due to reflected radio waves and interference.
5. People who should be somewhere but are not ◆ People who are mistakenly recorded as being somewhere but are not
6.〈Ancient〉《Religious》Human spirit, Soul

What can you do for Ghosts?
Neither living nor dead, everywhere yet nowhere, visible and invisible.

These girls want to chat, share what they like, have hot drinks, and so on, so let's get to know everyone by engaging in lots of chitchat.

And from the bits and pieces that mingle among the chatter, figure out what's going on with everyone and what you need to do.