Here’s what consumers have asked with answers from From Japan staff and previous consumers.
It is legit. I have been using their service since high school and now I am a college graduate. It's my favorite proxy.
You need to purchase at your own risk. From Japan does not own or sell these items. They simply are the forwarding service that will get you your items from Japan. They do have a warning to be careful purchasing unauthentic products. They sadly aren't responsible. In super rare cases people have been refunded, but 99% of cases, no. Most forwarding services are like this.