"Arata Is An Akito Foil And Souma Is A Touya Foil" Loud Incorrect Buzzer!! Both Arata And Souma Are Touya's

"Arata is an Akito foil and Souma is a Touya foil" loud incorrect buzzer!! Both Arata and Souma are Touya's foils in different aspects. Arata represents Touya's worries about being "half-hearted" and doing something on his partner's behalf and not because he himself wants to, something that Touya has largely left behind since the Main Story but still weights on him (it influences his overall behaviour of taking too much of the responsibility for VBS on himself in The First Concerto because he feels like he "owes" it to their feelings while disregarding his own; his father is not the only factor here). Souma represents the part of Touya that feels lacking and inadequate compared to his teammates. This is why they're such a big deal for his writing; both of them are important, and both Souma and Arata are foils to both Akito and Touya. (And also, partially to An, but possibility that isn't explored in canon yet and I doubt they will)