Hello

Those are the ninjas tag ,

They do not provide any bonuses by themselves but certains skill or passive may gets additional benefit against wearer of specific tags .

For instance Mei terumi get 30% extra damage against all wearer of the man tag ( so all male ninjas basically) .

On the pic the tags are : male,Konoha and swordman.so this a lightning main right ?

In your case Mifune give a % tai increase to all swordmen and you can get the full benefit of firecracker naruto ( forget the actual name sry) which give a second standard attack and a crit chance increase to only the Konoha ninjas (good example of tag only bonus).

Hope it helps.

I took Naruto [Ramen] as an example :

His mystery is as follow :

"Remove all buff of a selected ally, and allow them to attack an additional time for 2 turns.When the target is a konoha ninja,they receive a 30% increase to critical rate ."

The 30 % increase will only apply if the target is a konoha ninja (in other word if he has the Konoha ninja Tag).

If you use this mystery on a non konoha ninja ,let's say Gaara , he will have an additional standard but won't get the 30% crit rate increase .

As the previous poster said if you don't know a lot about Naruto you can just look at the tag (and even sort ninjas by tags) to know whether or not this ninja may benefit from the full effect of Naruto [Ramen] mystery.

There are a lot of ninjas having those sorts of "special effect" and building a team may require to look at those to fully benefit .

Some example :

-The pain Ninjas have passives boosting Rinnegan tagged ninjas (they work well together )

-Kakashi [Susanoo] make Konoha ninjas not miss their mysteries (understand that even a dodge ninja will get it by their mysteries instead of dodging them (if their dodge is up of course)

-Kimimaro Halloween increase his defence and attack every time he get hit , Reincarnated ninjas in the same team as Kimimaro (assuming he is still alive howeve )will get their attacks up as well (when kimi gets hits edo minato gains 1% attack for instance )