Inventor of another world, the little female ghost wants to kidnap me

Reborn in a different world, an orphan, the sky collapsed. Good news, the adoptive father is the strongest swordsman of the human race, with a strong backer. Bad news, the adoptive father is suspected to be dead and his whereabouts are unknown... Good news, the younger sister is a genius swordsman, and a serious brother control. Bad news, the younger sister was kidnapped by a bad woman... Miss simply stopped pretending, the backer fell, I became the backer myself, no need for a wand to cast magic without a medium, developed super-position magic alone, and rubbed world-class props by hand. The beautiful girls of all races said they were good after trying it. I am a great inventor and I show my cards. Miss: "I became an adventurer to save my sister, so are other sisters not my sisters?" The female ghost princess...