Grenadier: The Beautiful Warrior

Rushuna Tend, a skilled gunfighter, and the mercenary samurai Yajir Kojima are followed on their journeys in Grenadier. One who is somewhat adept in the use of firearms is referred to as a Senshi or "Enlightened." In an effort to release their lord who had been captured by a group of gunners, Yajir and a small army of samurai undertake a frontal attack against a fort at the start of the series. Invasion fails. Yajir orders a retreat, but the enemy spots him and pursues him to a tiny cliff, where he jumps off to flee. Rushuna is swimming in a hot spring after he follows an area hot-water stream upcurrent while still being pursued by his assailants. She hides him in the hot spring with her large breasts as cover till the adversary passes them by, appearing unperturbed by his presence or her own nudity. She then presents herself as a traveler and tells Yajir the secret to winning battles: destroy an opponent's will to fight.