Have you ever been a witch? Take this fireball!

"What's the most important thing about adventuring on this land?" "A blonde princess..." "No, no, no, you didn't understand what I meant." "An elf..." "Is that all you aspire to be as an adventurer?" "A saint." "Ahem, in this world of swords and magic, is that all you can think about? And you call yourself a magician, a witch?" "What witch? Have you ever been a witch? Take this fireball!" Dorothy, reincarnated into a fantasy magical world, starts in a dilapidated wooden hut. For a wonderful life in this other world, she decides to raise her fireball and offer her blessing to this world.