I'd love feedback on these rules/adjustments to see if this would fit with a power scaling heavy campaign. My biggest concern with the idea so far is that it would require too much resource tracking. 

Intent: give players more dramatic power scaling with each level up, with a higher total power ceiling, incorporating elements from the “solo leveling” setting and lore. 

Character creation: players start with the “commoner” stat block, except all ability scores are 8 instead of 10. 

• flexibility option. Players can add 4 ability score points as they choose with an appropriate background/backstory 
• Characters start with 1 simple item. No other items. 
• Players are all human.
• Story motivation: players must come up with a reason for their character to be undergoing Hunter training in the dungeons. Motivation should be strong enough to incentivize completion of the double dungeon.

Players start by running through a “double dungeon”. This ends with each PC dying. 

Reawakening:

• Players pick a class, and are now at lvl 1
• Players get 2 ability score point increases
• Players can pick an Origin feat

“The System”:

• DM gives players “daily quests” with rewards for completion that can include:
• XP
• Items
• Dungeon Keys (instant dungeon, tower dungeon, etc.)
• The system “store” contains basic items & potions for sale using GOLD currency per D&D 5e costs. 

Leveling: Each level up gives players 2 ability score points in addition to class abilities and bonuses. 

• level ups that would normally generate ability score points instead give the +2 ability score increase and a feat
• There is NO CAP to ability score increases. Scores over 20 are allowed. 

Level - ranking associations 

1-3 =-E Rank

4-6 = D Rank 

7-9 = C Rank 

10-12 = B Rank 

13-15 = A Rank 

16-20 = S Rank

Leveling:

Multiclassing prerequisites will not apply. 

• Upon reaching rank A (level 13), players MUST multiclass and they gain a “TITLE” that corresponds with their multiclass combo. 
• Players may create a custom class/multiclass at level 13 with DM 

Death & Dying: 

• When a player hits 0 HP, instead of rolling death saves they roll “resilience saves” as a bonus action. On their turn, they can still take 1 action but they have disadvantage on all d20 rolls and their move speed is 5. 
• Player death… Permanent? Needs feedback
• Party TPK. The party “reawakens” at half their current level (rounded down). OR… restart from scratch? 

Mana & Mana Crystals:

• all rechargeable abilities (spell slots, rage, ki, second wind, etc) are referred to as mana draining abilities 
• Short and long rest benefits can only be gained if players have enough “mana crystals”. 
• Resting without mana crystals regenerates HP, but grants no other benefits 

Items:

• Items collected from dead monsters & bosses can be crafted into magic items using Gold & mana crystals
• Items outside of dungeons must be purchased with $, which is tracked and earned separately from GOLD. 

Please create the ideal to Pathfinder 1e.

Resource tracking will always be terrible if you want to make it feel like a JRPG. I think that the optional mana points rule could work better than spell slots.

So I'm working on  solo leveling game but I'm going be using Dark Energy system it's based off 5e but more modern I'm going be using some of your ideas and some of this guys https://www.worldanvil.com/w/egress-hyperion8088. ideas and write of some of my own. Thanks ill let ya know what I come up with!!