A set of VR goggles and controllers.
While none of them are used for specific game systems, they are all excellent items because they are compatible with all types of current game.
As for the controllers, there are both dual-hand as well as single-hand models.
According to Tomoe
"If it's for things like shooting games or simulation games, I recommend the dual-hand, as for slashing games, single-hand is better".
The development designer is a certain Chaldea staff.
It seems to have been produced from the design data left in the library.