Lupin can be good for learning English if you already understand everyday conversations and want more consistent practice. The vocabulary is usually clear and direct, which makes the listening experience less intimidating for lower-level learners (more than 77% of the words come from common English vocabulary). Conversations usually leave enough room to process what is being said. Some parts may require more focus, but the main story remains easy to follow. For learners around B1/B2, this can be a practical choice for building confidence with more complex narratives.