Hiroshi Seo is the writer behind the Ubunchu! manga series. From the about page:
“Ubunchu!” is a Japanese manga series featuring Ubuntu Linux.
Three school students in a system-admin club are getting into Ubuntu!
The series is completely open sourced meaning that translations to other languages can be done. It is originally written in Japanese, but an English version is available at DoctorMO’s Blog.
I haven’t checked it yet, but I think it’s worth to follow his updates on this series.
Ubunchu!