Eternity Larva's Spread Shot (a Touhou LW original). She attacks by releasing a foul-smelling odor from the horn-like appendage on her head. It in fact isn't a horn, but an organ that secretes unpleasant odors. This organ possessed by swallowtail butterfly larvae makes them unique among butterflies. It is thought that the larvae use it to intimidate and distract predators, and that the secretion contains a mixture of over fifty chemicals.

Eternity Larva's Focus Shot (a Touhou LW original). She attacks by intimidating her foe with the eye-like patterns on her wings. The exact pattern varies, but the red marks on a swallowtail butterfly's wings are an example of eyespots. Their larvae are also unique in that they develop this pattern once they reach five years old. The eyespots effectively intimidate predators (especially birds) and serve as a decoy for their heads.

Eternity Larva's Spell Card. She attacks by attaching fine scales to her foe. Butterfly wings are covered in these tiny scales, which are what form their unique patterns. As well as their ability to distract and intimidate predators, the scales are thought to have a number of different functions, such as regulating body temperature by absorbing or releasing heat. They're mainly made of cuticle, which can also be found in animal and human hair.

Eternity Larva's Spell Card. This mesmerizing attack renders her foes unable to distinguish between dreams and reality. Butterflies have long been thought to possess mystical qualities, with Zhuang Zhou's "Dreams of Being a Butterfly" being a famous tale based on that subject. Butterflies are spiritual creatures, a symbol of rebirth, and the subject of many songs and stories. Humans have admired the butterfly's beauty throughout history and they're said to be the most collected insect.

Eternity Larva's Last Word. Strong-smelling citrus juice bursts forth in this attack. Citrus trees like the mandarin tree are evergreen, making them symbols of eternal youth and longevity. As a result, the fruit they bear is said to be a spiritual elixir that extends the lives of those who consume it, and is referred to as the "fruit of ever-fragrant trees." According to the ancient chronicles of Japanese mythology, the ever-fragrant trees are found beyond the sea in the promised land of Tokoyo no Kuni. Since Tokoyo no Kuni is known as the land of the dead, the fruit of ever-fragrant trees may have some connection to the Yomotsuhegui, the food of the dead.