世界樹の下から始める半竜少女と僕の無双ライフ raw 第01-07巻 [Sekaiju no shita kara hajimeru hanryu shojo to boku no muso raifu vol 01-07]

Rimuru, a twelve-year-old boy, surreptitiously visits a slaver to make a "purchase"—a girl with dragon horns who secretly holds astonishing power. This is the story of Rimuru and the half-dragon girl, who together embark on an adventure to change the world.(Source: Jitsugyo no Nihon-sha, translated)