Holy moly, it's Kurosaki!
Learned a lot from these 2 chapters regarding the underground and why they're there. They're making an underground palace-thing like how Putin has his mansion/bunker in the Black Sea and every team is building a different section.
Miyamoto is a true bro jumping on Numakawa first so that the rest of the black suits don't mess him up. He also ranks fairly high up, even above Yanauchi and Koyama?
TL commentary: pg11, Miyamoto tells Kurosaki that one of the rooms is going to be the chairman's 3rd audience room. The jp text is 会長の第3玉座になる予定です, "玉座" translates to a throne but the direct translation couldn't be used here. I'm still not entirely sure what we should call it because it's sort of like his own private quarters which is furnished with that huge wall of screens, except blacksuits come and go along with Tonegawa at times. Then again, sometimes debtors come into it to beg for something. Audience room might be the best for now?