The phrase "Mint in Box" (MIB) is often used to describe a figurine or item that is in perfect condition and is still in its original box, without any damage, scratches or alterations. So, if you see an ad or description that says "Izuku Midoriya Mint in Box" in the context of My Hero Academia, that means the Izuku Midoriya figure is in immaculate condition, kept in its original box, ready to be displayed or added to a collection without any visible defects.
