Occulomency - Beginner, Intermediate, Advanced(Same for Legilimency)

Examples - ( Beginner is like someone learning to build a mindscape. Intermediate is someone completing their but still being very vulnerable to legilimens of the same level or higher. Advanced is where you have high amounts of experience with legilimens, and being able to defend yourself to a high degree against others. I imagine advanced just being a war of attrition between the two partires.

Magical Ability - Ranks 1 - 4

1 - You can cast spells with a lot of focus and time spent in between each succesful attempts.

2 - Spells are casted with fluency and can be chained together.

3 - Wandless magic can be performed somewhat decently.

4 - Almost every spell is at your fingertips with the wizard/witch requiring a minimal amount of actual thought to be put in because of their familiarity with magic itself.

Magical Capacity - Ranks 1 - 4 (Took inspiration from magus of the wizarding world cause it seemed right to me, recommend you guys check that book out if u like HP fics)

1 - First magical maturity at 11 (5 in the mana stat if u had a gamer system

2 - Second magical maturity at 15/16 (15 in the mana stat)

3 - 3rd magical maturity at 50+ (50 in the mana stat)

4 - Last magical maturity at 100+ (150 in the mana stat)

Mcgonagall should've been around like 60+ in the start and Dumbledore was around 100+ but that doesn't mean the mc can't fasten the pace of the magical maturities. I imagine it as a bowl filling up and then overflowing with all the mana pouring out and creating a bigger bowl each time. Now imagine the mc can control the amount of drops flowing into the bowl because of nano allowing him to absorb more from the surroundings, plus there's the magic is a muscle explanation so this is for the average person who isn't exceptionally talented with magic etc.

Another thing I should make clear is that you can't increase lung capacity so mc will be limiting his use of thunder breathing a lot because of two reasons. 1 - He has to choose 1 target to aim at with the thunder breathing so it's useless in team fights (dk if this is actually a thing since I didn't read the manga). 2 - Every use of thunder breathing will deplete like 25% of his stamina (Ron might have zenitsu's memories and stuff but only of his training since zenitsu can't remember any of his actual fights, also the demons are weak to the nichirin blades so they die faster when hurt by it but, something like the basilisk might not die from a normal blade and will take multiple hits. (I won't be allowing him to do any trading for a goblin steel katana or do the usual investment into muggle business stuff since the weasleys are poor and the mc could probably survive with a conjured katana instead of a super high tech one. He won't have infinite katanas either since he can't just carry a blade with him at all times and it'll take time for him to conjure a proper katana albeit a short period of time.) (In the final war stage of the book i think thunder breathing will be used for ambushes and stuff because of how long you have to stay still for etc.)