Setting: Workplace + game
You say this is a game? No, this is the real life of today's overworked employees.
In the world of overworked employees, there are no sweet, naive girls, only manipulative green-tea types; no kind bosses, only cynical veterans who shift the blame; no handsome coworkers, only cold newcomers; no domineering CEOs, only System bugs...
This is a very formulaic story, or perhaps you could call it a simple combination of the formulaic and the unconventional.
Theme: Live positively and keep striving.