*At request for further explaining on Spirit Social...
So... really, the only concept to understand is that Social is not the same as the other Stat growth because it is dependent on all the other stat rather than itself. (In other words, it is kind like a completeness of you spirit weapon.)
An image break down of ALL level B growth Spirit (Which does not exist) would be the following:
Where the first 5 bars are the basic str, dex, int stats etc. and the last bar is the social growth.
This is why when you feed something that gives 1000 exp to Str you are going to get around 200 exp for Soc. It is not because Level D = 0.2 Exp rate, if because Soc growth depend on all 5 stats and the max value for 1 stats is always 0.2 where 5 stats will make it 100% (Reverse Thinking Here), the so called Level B.
If Social were to act as the other growth, it would be something like this:
A completely different stat with is own color code.
But that's not how it works, because of Female Sword Spirits disprove it.
Stop for a moment and think what is the problem for Female Sword Spirits? They will reach Social 50 before the other stats and hence truncate the possible growth (The problem is fixed btw).
Okay! If that were the case, it must be because the social growth "IS" higher than the other stats. But that wouldn't be the case if the Spirit is Level D:
It would be a constant rate of 20%.
Now, let's use the first image idea and apply the situation:
If I were to feed the Spirit Female Sword, Str would get 100%, Int would get 100%, Will would get 100%, Dex and Luck at 80%. What about Social? You guessed it, 100%. This is why the growth truncation happens.
But what about the others spirits? They don't have this problem because they have higher than Level B Stats to cover up the shortcoming of the Level C stats.
This is supported by Diamonds feeding also:
Because Diamonds raises all the stats equally (It doesn't have to be 10cm either), you can see the growth rate completely and reflect the bar image accordingly. (And guys, this is why girls like diamonds, it never lies.)
That's also why Diamond feeding is bad for Spirit Female Swords, because their growth chart is not balanced, feeding Diamond will only result in faster truncation (Again, nothing to worry about now).
Finally, the idea here is not about it should be named Level D growth or Level B growth or Level D = 0.2 growth (who came up with that anyway?). The idea is you understand how it works and why social is raised slower than the strength and the other stats.
People can call it Level F if they want really, it wouldn't change how it works in the system.
