レベル番号 でしょう
reberubangōdeshō
1. Level number, probably.; It will likely be level number.
Noun
1. Level number, probably.; It will likely be level number.
1. telephone number
1. high-level
1. number on the back of a player's uniform; uniform number
1. number; series of digits
1. registration number
1. account number (bank, etc.)
1. it seems; I think
2. right?; don't you agree?