@itdosentmatter
Why someone would do a sequel in that manga?
Promoting the live-action show.
I mean you could use another character
Already done. Called "Alice on BorderRoad", and it wasn't very interesting imo.
the art looks a little off for some reason
The artist didn't have practice in years. Zom100 and BorderRoad were drawn by different people. Haro Aso considered quitting drawing as a whole and drawing sequel only to push "Alice" as a whole. And he has every right to do so, this is very niche series and deserve to get a little bit of attention. I wouldn't call it a "milking" as a lot of people do. This is not Shaman King or Goblin Slayer with spin-offs being announced every day or Naruto with his "continuation" no one asked for) More like one more game, an epilogue to a great story, why not? I myself extremely happy about it.
@goronyanpai
What's Arisu actual condition in real life?
Is it a coincidence he came back to Borderlands at the same time his wife was giving birth?
Is it a coincidence he, once again, was feeling like he was bad at his life and his job and wasn't sure about what he has to do?
No. Of course it's not, come on.
You don't have to be a psychiatrist to read into this. Arisu had very shitty relationships with his father and, let's be honest, being a father is a lot of responsibility. Are you ponderind what I'm pondering?)