RE: Mushoku Tensei Time Travel Changes Everything!

Yeah the mushoku novel is quite realistic, is deep as far as character development. I recommend you to read the novel as there are information about their inner thoughts that the anime don't have time to dwell on it. Not just from Rudeus but also the thoughts from Roxy and Sophie. The struggle with Rudeus family wasn't as quick as shown on the anime, they go into the individual struggles and what changed to make his family leave.