SantuchiOS

SantuchiOS is an operating system series created by Santuchi during 2016. It has been featured on Santuchi's Never Released Operating System series. It's now discontinued due to unrealism.

Trivias

 * It's got 3 variations of this: One was made during 2016 in Powerpoint (it's not revealed yet), and in 2017 it has been refreshed several times until reaching the current SantuchiOS image you're seeing at the right corner of your screen.