That is Vritra's tail in Riyo's art style, but the shoulder spikes are new.
perhaps these spikes are actually her horns, and Vritra's head is the hooded figure's upper torso (chest & shoulders) note how the hooded figure's speech bubbles always come from the torso and not the (fake) masked head
When you got partners that can defy the laws of physics in their plains it's best to ignore what is possible and instead embrace what has yet to be done.
Tabemi-chan's voice actress is the same person who sang "Cirno's Perfect Math Class". Yes, that is actually true. So this actually counts as "voice actor connection", as a result of that.
Considering the commentary, pretty sure the artist mistagged it as C100 on pixiv when it should have been C105. Changing the tag here from Comiket 100 -> 105
It's a neat detail how the Shanhais are creating the border by welding (wonder if the two dolls are competing or sth since they are using two different methods). Also they have a computer fan attached to their dress lol
