This is a time travel show but it's not the typical journey to the past to try and stop Hitler or whatever (like a bunch of TV shows are about). I was actually hesitant to watch it at first because I thought it was going to be like that... but it's not. The story is pretty unique and the main character is probably my favorite part of the show. It's kind of crazy and that's what makes it fun. Give it a watch and if you like some time travel mixed with crazy, you should like it. Fair warning, season 2 (Gate 0) is slow and feels like a different show until the end, but if you stick with the ending is good.