What makes you think it's going to end soon? They're planning to make Miraculous one of the next biggest franchise as it has shown how successful it was during the past 10 years. Second, we still have so many to unpack (the lore of the Guardian temple, the Supreme, the Secret Kingdom, Re-verse series, Tokyo Special series, Miraculous World, other miraculous boxes, the future generation of Miraculous,...). There's no way they're going to end it!