リュックサックでしょう
ryukkusakkudeshō
1. Probably a backpack.
★ Common
Noun
#40081
1. Probably a backpack.
1. rucksack; knapsack
1. it seems; I think
2. right?; don't you agree?
1. It was not a backpack.
1. Not a backpack.
1. If/when (it is) a backpack; Assuming (it is) a backpack
1. If/when (it's a) backpack
1. It wasn't a backpack.
1. It's not a backpack.; I don't have a backpack.
1. Backpack was.