Laëtitia Franceschini Champion joins the Os association in 2023 for a work-study program as a communications and related actions officer, in parallel with her Nanterre master's degree in humanities and cultural industries (MCEI - cultural and intercultural mediation). Her various professional experiences have prompted her to reflect on professions linked to mediation and communication. For the 2022/2023 season, she completed a civic service at the ECAM - Espace Culturel André Malraux theater in Kremlin-Bicêtre, as an audience relations and communications assistant. She also assisted the theater's director, Claire Bourdier, with production/administration for several months.

Her bachelor's degree in theater studies from the Sorbonne Nouvelle, and her varied artistic practices (visual arts, dance, theater) have enabled her to develop a multi-faceted sensibility, which coincides with Gaëlle Bourges' artistic approach. The emancipation of the spectator is something she has been interested in for several years, and in 2022 she completed a short internship with the Théâtre de L'Opprimé on this subject.