Akiyama's section ends by introducing another intrigue thread with Majima, then you immediately cut to Saejima's section. Saejima is voiced by the same guy who voices Takamura in Hajime no Ippo, so I liked him. His fighting style takes some time to get used to with all the charging but when you do he might be the strongest in the game. Hamazaki (who was arrested for stabbing kazuma?) makes you do a weird fetch quest, you escape prison, there's a weird bit with Haruka, fight Kazuma, you go to Kamurocho, stuff happens, you fight Majima. So, a dude cuts out Majima's eye and what? eventually he's let go and Majima never takes revenge? we've seen Majima through three games by now and he's more than a little unhinged. The game does this a lot. Scenes start or end abruptly and don't make sense. Now you're with Tanimura and his broken L1 counter. The plot seems to be coming together at this point. You (think you) learn about all the big bad guys. Tanimura's section ends with an old guy inexplicably killing himself instead of like testifying against Munakata or running away or something.
Finally, you play as Kazuma!! why? what's his role in this game? he's an outsider in this story. jumping ahead, his final boss is Daigo, and the conversation goes something like--
Kazuma: Daigo, I'll punch some sense into you.
Daigo: Kazuma, I appreciate the opportunity to fight again.
Kazuma: STRIP!
jumping back. somehow Hamazaki is alive. Kazuma and Yasuko go to Kamurocho. Date is tending to New Serena (so they can avoid answering whether or not Date married the owner?). Kazuma sees Majima getting arrested (

). Kazuma kicks Tanimura and Akiyama around (awesome). Everyone meets up top of Kamurocho Hills and Kido is a double spy or something. Saejima smacks Katsuragi around but leaves this gun next to him and Yasuko get shot. Oh, and rubber bullets so Saejima isn't a killer wtf.
The final section has all four characters meet up. There's only a single side mission of interaction involving a baby. Everyone marches towards millennium tower and shit happens. Akiyama vs Arai? makes sense. Tanimura vs Munakata? makes sense. Kazuma vs Daigo? uh. Saejima vs Kido? why. Everyone wins. They leave a gun next to the bad guy, he shoots Akiyama in the fat stacks.
they still leave the gun next to the bad guy and he does himself in. I don't know. In the epilogue Date is back with the police, Saejima is given his own mafia family, Majima is out of jail, and it feels like it's implied that Kazuma would come back to the Tojo.
I really enjoyed it. I think Kazuma's section should've been restricted to Okinawa. Majima should've been saved for Saejima's last boss. Story could've been simplified where Arai defects to Tojo and takes it upon himself to save the clan.