As much as the government in this series is a crapshoot and should not be exempted of blame for their shit, I'd say it's better to not give Teru too much credit, or fault, same for Hoshizaki.
First, the government, the Oniwaban led by shitty and short baldy with a god complex (Okouchi), and the oligarchs/elite are not the same. You can clearly see the disagreement the current prime minister, Hoshizaki's father, had during the conflict of Japan x Russia where Tsuyoshi was kidnapped and later freed himself, it's most obvious with his duel with the russian prince (forgot his name), same with the team battle for Tsuyoshi of the Oniwaban vs the mixed band. Hell, there's even the US military taking part, and they were only pushed back because Tsuyoshi and his mom made everyone crap their pants.
Regarding choosing team Teru or Hoshizaki, they're both bad friends for Tsuyoshi. Hoshizaki mostly for abandoning him during the period where he was labeled an anti-social and was isolated on Okinawa, at first you could say he was busy working as the PM secretary and Tsuyoshi was finally going to art college, but he would obviously know what happened to him after Tsuyoshi was kicked out. And Teru, he pushes Tsuyoshi's worse tendencies to light, in some ways the harm he does to Tsuyoshi is the same that he does to himself and that has been done systematically to him since he was young, same as Hoshizaki, he does what he thinks is right, which doesn't make it a good thing, though it makes the narrative go in hilarious directions imo.
I still regret we didn't see Tsuyoshi fuck up the oligarchs, but maybe we'll see that in the future, I find it unlikely. Now, chinese Sasuke feels like a classic faux affably evil, I can imagine him wanting to take Saki for his personal satisfaction or to position her against Tobio or later Tsuyoshi, which is likely to backfire in a funny way.
Anyway, thank you very much for the scanlation, can't wait to see where this goes next.