Unless there is a follow-up anime planned, or they want you to follow the manga (which at the time of writing this is exactly at the same place), this whole clearly no-a-movie does not make any sense.
There is no time to connect to any of the characters, the plot is...difficult to find.
And without any kind of follow up, the ending is just anti-climatic. Nothing actually encouraging you to start following the mange or wait for any anime.
By the end of the third episode, you are left wanting your hour or something back.
Skip this unless they announce something that would need you to watch it for context sake.
