Artist's commentary
Wriggle's Shadow
Wriggle's Shadow effectively incorporates three components: Nostalgia for an era when insects threatened human life, righteous indignation for delicate humans, and a hatred and envy for science and technology. A killer spray that can surely kill even the most troublesome of humans. With its phenomenal hit rate, it can surely hit even that shrine maiden! It can also be used for black and white witches, 2P shrine maidens, crossroad killers, padded maids, etc. Odorless, fragrance free. * Never use it for monsters, fairies or other people.
(Also, one of the tags for this thing on Pixiv is "This is Terrible," which made me laugh a little.)