yogiri dari anime apa kenichi
It does not pile us with crappy monologue to world build but instead puts actions into words through Rudeus' experience with magic. Not only does this build a deeper connection between the viewer and the characters, but also allows more time to become immersed into the show. It takes baby steps in introducing this new world instead of shoving introductions into one single episode, something that several shows unfortunately incorporate too often.
Character
It is crystal clear from the beginning that our main character is not meant to be liked. In his previous life, Rudeus was a complete failure of society. He mooched off his parents, skipped their funeral, and never accomplished a single thing in his life. However, maybe we were never meant to like him in the first place. His flaws as a human being not only makes him relatable as a character, but also leaves room for him to change. Remorse and regret haunt Rudeus, and he sees this second chance at life to correct himself, slowly but surely. The link between Rudeus' past life to his present lives up to the theme of reincarnation, something which MANY MANY isekai animes simply refuse to acknowledge. Through his willingness to learn new languages, it also goes to show that he is willing to work hard and refuses to repeat the habits of the life he had lived previously.