What do you mean?
Shigure is a consistent character throughout Kazuki-sen's other works.
In Night Before Nights you get more of his story and how he passed away.
Genji's friend that has dark hair and always smokes. His name is Shigure Ichijou. After the timeskip, he's already dead.
You can read more abt him in the prequel "Nights before Night"
This is the correct sequence though
1. MODS
2. Nights before night
3. His little amber
Aaahhhh ok now I remember thanks
Dare I say PEAKKKK
Also it's even sadder now that Shigure has alr passed away after timeskip