Mon prof le tueur - Reborn ! #21

This 21st volume of the French-language edition of 'Reborn!' (also known as 'Katekyo Hitman Reborn!') introduces the Sistema Cai, a key arc in the series. The story follows Tsuna and his guardians as they face new challenges within the Vongola family's internal power structure, with the title referencing a major character's declaration. This Glénat collection continues the action-packed shonen saga by Akira Amano, collecting the original Japanese chapters in French translation.