Raising Aptitude

During the initial inheritance, the amount the aptitude increases is based on the number of total stars among the pink sparks of the parents and grandparents. Raising it by one rank requires 1 star, then each subsequent rank requires another three stars. You can raise each aptitude a total of four ranks in this way, so an F rank aptitude could only go to B during the initial inheritance, even with 18 total stars.

As an example, Mayano Top Gun has an E rank Dirt aptitude and a D rank Mile aptitude. In order to raise her for Dirt PvP, you would need to raise both to A. Getting Mile to C takes one star, then 3 to get to B, and 3 more to get to A, for a total of 7. The Dirt aptitude requires one more step, so it requires 10 total stars.

In total, this is 17, but it’s not possible to do all at the start since one uma can’t have two different pink aptitudes. You could do 7 Mile and 9 Dirt (3+3+1, 3+3+3), or 6 Mile and 10 Dirt (3+3, 1+3+3+3). One of them will have to be left at B and raised through an inspiration event.