To keep it really simple, Gleipnir is a show that has a lot in common with shows like Future Diary and the Big Order. There will be a lot of censored nudity, some awkward sexual abuse, a crazy psycho girl (Claire) that's dragging the weak & indecisive main protagonist (Shuichi) through the story, and a bunch of goofy-looking supernatural monsters fighting each other to the death over coins that will grant wishes when returned to an alien who crashlanded on the planet and lost all his buddies.
The show does have some good moments but all of these are related to the backstory that we get introduced to in the last few episodes of the season.
Truth be told though, if it wasn't for Takahiro Kishida (Japanese animator who worked on Baccano, Durarara, Btooom, Haikyuu, and JoJo's Bizarre Adventure) I probably wouldn't have even watched Gleipnir. The premise of the show just doesn't interest me at all but I did get to see a pretty cool fight scene.