And beware this is not true for the main characters, only for the ninjas. I've tested this enough in the past, when water main's shark bomb was viable. (i used to run a troll team with kabuto snake cloak and kisame samehada with nature energy gathering).

You are right about this.

Every reduction stats effect gets removed after 3 rounds unless is renewed (it works exactly as the shields and poison).

The reason why the injury effect is only 15/16% is because there's a lower cap to the critical damage you can't go under (the basic critical strike damage increase is +30%, that's the amount you can't decrease).

I used to run that team in arena, around 1/2 years ago.

The enemy always went for water main and eventually killed her but when kabuto resurrected her the damage of sharl bomb was not reduced (i got a lot of 'happy' comments in training arena when they saw a 4k bomb killing them as soon as kabuto resurrected her ).

I didn't test this after 6.0, so i can't say for sure it still works so, but in 4.0 and 5.0 was so, for sure.

Yep, works so.

The effect should be described, infact, like the suppression immunity/super armor ones, but there are always problems with the translations.

It's, actually, a 'suppression of the selfscaling buffs for x-rounds'.

It's the same thing as the translation/explanation of buff removal effects, whose correct explanation should be: reduce by 10 rounds the duration of every buff (this would remove all the ambiguity about selfscaling and barrier effects that do not get removed because selfscaling last indefinitely and barrier buffs get actually removed but are instantly renewed before every action as long as the barrier is up, so is like if they are not removed).