This project presents an analytical proposal in the field of illustration with the aim of studying the posters of manga fairs in Spain, which promote Japanese culture and sell Japanese products. This study examines how illustrations are adapted for the Spanish audience by analyzing the posters of the 40 most recent fairs held in Spain about Japanese and manga culture. This allows us to determine the presence of the identifying elements of Spanish culture, such as the use of flags or monuments, among others, and to affirm that despite globalisation, the characteristic features of each region continue to be extolled in advertising. The methodology applied is known as content analysis based on a quantitative approach.