MIZUNO Table Tennis Backpack, Brand New, Unused

Received as a gift for my child, but it has not been used, so it is brand new and unused. It has been kept in its bag (taken out only for the photo).
This item originally cost ¥6,980. The interior is fluorescent yellow and has 4 pockets (with zippers). There is a mark, like a magic marker, in one area. I believe this was present from the beginning, but please check image 7 for confirmation.