Modern Knowledge anime

Characters in these anime possess modern-day knowledge that doesn't exist in the place they've found themselves in. They have been reincarnated or transmigrated into another world where they use their past memories for a specific advantage, such as a trade or occupation, or for an important objective. For example, they may be a brilliant strategist reincarnated into a world at war, or have modern medical knowledge in a medieval world and become a doctor there.