Assuming the correct phrase is "" (Hirasuna no Naka no Riaru Uncenso), I'll provide a report:
Hirasuna no Naka no Riaru Uncenso
The phrase seems to suggest a concept where within a state of calmness or serenity (hizashi/ hirasuna), there exists a real or genuine sensation (Riaru) of unease or discomfort (Uncenso). This could relate to various fields such as psychology, philosophy, or even aesthetics. Hizashi No Naka No Riaru Uncenso