It follows the generic isekai (parallel world) anime formula, a guy who used to play a lot games, someday wakes up in another world inside the body of the character that he used to play in the game. Despiting the generic premisses of the anime, the story overall was very enjoyable, the main character is very charismatic, you will enjoy his reactions and his relationship with his companions.
Personally the pilote episode and second one was the episodes which I enjoyed most, mainly because you can see some good action and know more about the main character.
The cons for me, without giving details to not spoil, is that after the third episode, the elf girl that joins the group start taking most of the fights, you won't see the main character fighting for a while after ep. 3, he ends becoming a supporter character only using his magic , which is a pity, to see the skeleton knight becoming a side character on his own story. And also after episode 3, mostly of the action is taken off-screen, usually the camera just moves to the top, showing the forest and the sky, and you just hear the sound of the action (the animation really gets cheap from here), you will only get to see the main character doing some cool moves by the end of the season. I wish the animators could had spent more time in animating the action scenes and cut a bit of the eating scenes (and there are a lot of eating scenes on this anime, the mc is a real gourmet, despite being a skeleton, seems all the animation resources to produce this series where placed in animating those scenes.. on all episodes you will see long eating scenes, you really get tired after awhile)
Finishing, I personally recommend this anime, despise the cons, the charisma of the main character alone already make it worth watching it, and the story itself is very entertaining.