[Yamada Hideki] Manyuu Hikenchou Vol.3 [biribiri]

Chifusa is a busty, blade-wielding swordswoman fighting to survive in a feudal world where status is decided by breast size and a secret scroll holds the power to steal, cleave, and redistribute them at will. Caught between ritual breast inspections that determine a woman's marriage and virtue, ruthless duels against those who would weaponize the technique, and a confrontation over her own conflicted longing, she must turn her sword against an entire system built on voluptuous dominance. What begins as tense intrigue and fierce, flesh-bouncing swordplay spirals into a playful, provocative climax where everyone suddenly shares the same ample curves, leaving even formerly powerful men tearfully fondling their own new breasts and discovering that equality is not the happiness they imagined.