I know it's already published but I'm reading it on catch-up right now.
This may be nitpicking but I just wanted to clarify something. In volume 5 for all the chapter titles, it's supposed to be X years old and not the Xth year, right? It's the same construction that makes this the 21st century even though all the numbers start with 20XX.
Question from part 4 (chapter 4 Kiryuu at 21 years old- the second tome)
I just learnt to drive and as far as I know you're supposed to keep your foot on the brakes when the car is stopped. If you put it in neutral while the car is stopped, you normally take your foot off the pedals directly. How did Kiryuu manage to push down on Hitomi's leg and cause her to press the gas?
Ah, nevermind, I figured it out. Writing this out caused me to remember that there are some people who use both feet on the pedals so one would always be on the gas pedal.
Though, another question comes up, can the gas pedal be pressed while you're pressing the brakes? Or did Hitomi stop the car, leave the gear in drive and even take her foot off the brakes while having her other foot hovering over the gas?