Hi, the karma fruit is super cool but it kind of needs a little bit more of a touch-up. The fruit can go in a more physical attack tank focus while also getting slight damage buff. I have a couple of ideas for the fruit, some canon, and some not so canon..
Canon:
Karmic Punishment- When fighting a pacifista Uroge used a barrage of punches against the pacifsta which did a considerable amount of damage. The move can have a base dmg that has a small multiplier with your karma.
Karma Meter takes longer to max- Make it so that you need more damage to max karma, but in exchange karma deals way more damage. Uroge kept growing bigger the more damage he took in his fights, so he still kept increasing in power as seen when he was finally able to damage the pacifists compared to before when he couldn't. We just need a damage buff for this fruit PLS!!!
Non Canon:
Damage Reduction- Please give this fruit some sort of damage reduction, it doesn't have to be a lot but at least if your above 80 karma or so just let the fruit take slightly less damage, it would really help the fruit preform better. We know that the more damage he takes, the stronger he gets, but there is a drawback we see when it comes to elemental attacks such as light beams, which he still got up from but he was hurt far more from. You can make it so that elemental attacks or light based attacks ignore this resistance/reduction but still grant karma. This would be a nerf, but in exchange you can make it so that he is way tankier against physical attacks and gains more karma from them.
Thats all I got, please give me ur thoughts! I want this fruit to be somewhat viable especially cause its in iron tier, and I think these changes would make it stronger while also not overly buffing the fruit and making it have somewhat of a weakness.