I watched this anime in 1996 or 1997.
In it, a young swordsman finds a naked, white-haired woman in a snowy forest. This young lady is being chased by an army because she’s powerful.
The man has a younger sister with healing power, but she cannot heal her father.
During their adventure, they find two friends; one is a weapon that can be divided and multiply and the other is an attractive woman who has a necklace with a red stone that can be used to power up a ship.