MFB
Banned
Nioh and Nioh 2's DLC is pretty fantastic. They add a lot of new missions with new enemies and bosses, entire NG cycles and tiers of equipment, and most relevant to most players, entirely new weapon types (which you can get in the base game immediately as random drops if you have it installed, they're not anything you have to unlock or get to NG+ for). I know Tonfas are DLC associated, if you've gotten those then you have it. That's on top of a new area or two for each DLC, and the DLC missions are a lot more interesting than most of the base game ones. Nioh 1, though, has a GIGANTIC difficulty spike cause they tuned the DLC for people that had cleared the game on NG+ so if you go in fresh after beating the last boss on NG you will get completely curbstomped. Nioh 2 doesn't have that problem.
I guess you bought Nioh a long time ago, or got the PS+ version when it was free like 6 years ago? If you get the PS4/5 remastered version I think it's complete by default. The complete editions are very frequently on sale for 20 bucks or less, while the piecemeal DLC is 25 bucks for the season pass alone for Nioh 1, so if you like it enough to get the vastly superior 2 make sure you don't get the original release.
I bought both of them YEARS ago, minimum 2 but probably actually 3? I got Nioh 2 FIRST because it was on sale for $10, and then when I was going to play it, I thought, "well I feel like I need to play one, so I guess I'll grab that" and then never made it past Hino-Enma; and even getting to there, I guarantee I wasn't playing it as well as I am now between stances/posture/weight management etc.
Haven't gotten any tonfas in the base game, so gonna go with a no to the DLC