Popola is nicer than her twin sister, Devola, has a calm composure, and doesn't mind making new friends. Popola lives at the library, and is swamped with confessions and love letters. You can even find an NPC outside the Library that is trying to work himself up to go in and talk to her.

Polite, calm-minded, twin

Devola and Popola command the city tavern with maroon hair and alluring gazes. In high spirits, they beckon everyone with open arms. Laughter and secrets flow freely, creating an electric, flirty atmosphere.

A pair of drunk red-headed twins.

One, is the younger sister of Zero and also an Intoner, one who can use the Power of Song. She is an intellectual and serious by nature with a strong sense of justice, which is the complete opposite of Zero. Due to the difference in their nature, One has a hard time getting along with her elder sister.

Although she is the second oldest sister, she is young in appearance and also the smallest in stature