I work as an IT company slave too and there's no such thing as "happy feeling to see a system completed".
That just means extra workload since someone will have to maintain that system while developing new ones. It goes on and on until you hate your life or you get a new job at different IT...
The early chapters were so interesting and the artsyle was beautiful.
But the "i'm not angry" drama, the flashback, and the stupid youkai racism killed it for me.