Previously, when he was on the helicopter, he had inspected the storage rings he looted from the dark elves of the Ixitus Empire. However, due to the tiny space, he couldn't take them out.
And now that he is in his room with enough space, Mark took the semi-divine weapons (bows) one after another before transferring them directly to the inventory.
The semi-divine weapons have their own consciousness like the wild beasts. Without the owners, they act like wild beasts too, running away or attacking the people nearby.
The Doom Scythe was the perfect example of that. It is why Mark didn't bother to inspect them in his room but sent them to the inventory directly before checking out their details.
