Seeing Galko's new lipstick, Otako explains that the lips have always represented the person's genitals. Otako adds that you can also tell the condition of a person's genitals by looking at the shape of their lips, to which Galko inadvertently hides her own lips.
So people wear lipstick to make the lips vivid.
Por eso acostumbramos 
a colorear nuestros labios.
Por eso acostumbramos 
a pintarnos los labios.
Même leur couleur serait identique…
Ed è proprio per risaltarne il colore
 che si mettono i rossetti.