At the time he came out (2010-2011), that episode was impressive.
Umemaro was in my opinion already a High Standard and for me the best when it came to 3D adult animated artist (still is today).
Because until Omega 1, he just made a video with a scene or a situation so with this one, he deliver something way more significant than usual and assemble all the characters he creatied in this universe in one plot.
And of course it's work fine.
But now even with the others works he made after this, especially the episode 2, he's still a solid one and one of the Umemaro's must see.
Umemaro was in my opinion already a High Standard and for me the best when it came to 3D adult animated artist (still is today).
Because until Omega 1, he just made a video with a scene or a situation so with this one, he deliver something way more significant than usual and assemble all the characters he creatied in this universe in one plot.
And of course it's work fine.
But now even with the others works he made after this, especially the episode 2, he's still a solid one and one of the Umemaro's must see.