In a world where large breasts are crucial, Chifusa Manyu, heir of the Manyu family, flees with their secret enlargement techniques. Attacked by her sister Kagefusa, Chifusa discovers her ability to transfer breast size and embarks on a journey with comrade Kaede.
I'd heard that some of our clan 
were attacking nearby villages,
Mir kam zu Ohren, dass unsere Leute
Oí que hubo una cacería de pechos
en los pueblos cercanos, pero…
Había oído que hubo una cacería de tetas
en los pueblos cercanos, pero…
De ce qu’on m’a dit,
Ouvi dizer que alguns do nosso clã
estavam atacando vilas próximas,
До меня дошли слухи, что кто-то из наших
называет себя Грудоворами