If you ever watched SAO, then you know that anime is not a true Isekai but still SAO is a interesting concept that has Excellent MC Design, Excellent MC's Waifu Desgin with a great storyline and great action adventure in the VR world. There is a seriousness and dept to it. Well, "Shangri-La Frontier" is the opposite of that. The MC's character Design is just Lazy and Pathetic. His backstory is pathetic as well. He plays all the pathetic games that no one plays. When there are perfectly good AAA VR games exists. And when he finally start to play a AAA game, there he wears a "Bird mask" and no clothing or armor. It's seems like the writer intentionally did this so that the MC's mouth won't have to be animated. Nor his clothing or armor need to be animated. Saving money in anime production. Even his first Waifu Design in the VR World is Lazy and stupid and nonsense. She wears a huge male Armor that should not even fit her. And we all know in Game World all female armor and clothing supposed to be skimpy/lightweight in design. That is just common sense. And the writer makes her run fast with that huge male armor which is pure nonsense. Well if you want something different and awkard that normal then this anime is for you. This anime is also a comedy. The MC's talks too much even in battle, and he talks with himself. If you think about it, it's actually good that he wears a bird mask all the time. So that we don't have to suffer watching his mouth running all the time. There is a reason Good AAA games MC don't talk. And the writer didn't knew that.
Ultimately this anime is about a guy who plays pathetic games decides to play a Popular AAA VR Open World Game with a Bird Mask and no clothing or armor. No lives are at any risk here. It's just a game. And the MC wants to beat it. Although beating the game accomplish nothing. No one is actually in danger. There is no real plot here.