Aselia the Eternal -The Spirit of Eternity Sword-

You are Takamine Yuuto, an orphan who lives only to care for his sister and ensure they make it through their ordinary everyday lives (with a little help from their friends). One day he is suddenly interrupted by a call from beyond this Earth - he has been summoned through a mystical portal to the distant land of Phantasmagoria!
With his sister Kaori held hostage, Yuuto must fight as an Etranger - a warrior of power - and take up the sword to fight alongside the beautiful female Spirits who protect the land from the evil that threatens to consume it. With these new comrades, a tale of desperate heroism, newfound purpose and tender romance unfolds...