DNF: I Conquer Other Worlds with My Disciples

【DNF System】【Apprentice-Collecting】 Game power-leveling expert Xie Feng dies suddenly and unexpectedly transmigrates to another world. He awakens the DNF All-Class Mentor System, and can grow stronger simply by becoming a mentor to targets selected by the System. An older beauty cursed so she can't wield a sword? Isn't she the perfect template for a female ghostblade? You're in! A little red-haired girl who can't sense magic? Isn't she basically a mage? We'll get you started on the mage classes! A member of the royal guard, framed and forced to flee everywhere? Isn't that the perfect backstory for a female gunner? Then I'll give this other world a taste of the shock and awe of technology from the Celestial Realm! An energetic young woman seeking a master to help her reach the limits of physical strength? I'll show you what it means to shatter the void with a single kick, the Valkyrie's powerful strike! An older beauty of a dark elf who serves as a maid captain? I don't care who or what you are, you're in! A pair of twin sisters bearing the power of light and darkness? How could I not take them in? You're both in! Wait, why are all the apprentices selected by the System girls?