Demi-chan wa Kataritai - Vol. 2 Ch. 14 - The Demi-chans are Friends

[MangaDex]

 

[Sacul2551]

Love her calling it nib-nib cuz that's exactly what me and my siblings would call it

 

[Grimmycoffee]

Seems less like a vampire than one of those bit-y critters.