What also is potentially lost could be the animation works that were in progress at the time of the arson. Not an anime follower thus not familiar with their work, but this could potentially include the second season of Miss Kobayashi's Dragon Maid.
So what do you say? Does this constituent a matter of interest to the lost media community? Thanks.
That said, it is possible that the studio might have some backup copies of the work they did. But given how surprisingly Japan can be technologically backwards (e.g fax machines and disc storage is still very mainstream there) I doubt that much content was saved. Best case could constitute as partially lost media?
"The company took a big personnel loss, but past materials have all been "completely ruined" by the fire. Company president Hatta also also stated that "All the computers are also completely destroyed", and "The monetary damages? Massive. I couldn't even tell you". Details on whether there will be a joint funeral service has yet to be determined."
I feel like we typically cover things that can actually be found, but if it's important enough to you, then make an article about it.
But right now we have no clue as what as actually lost (the boss said that a lot of materials and data were lost, but did not specify which shows. So I don't think an article is needed yet... Or how do you think it should be structured?