Boy 12-14, no fantasy, violence or romance

I have a tricky one for you today. I am not trying to be difficult but I have a student with very specific needs. He loves to read but for mental health issues we need to keep a tight lock on what he reads.

I need books for a middle schooler age 12-14 that is set in the this world - no fantasy, about animals, no violence of any kind, no death, no romance even innocent, no sex, no drugs. Basically the cleanest most innocent chapter book of all time.

Anyone have any suggestions?

*Thank you for all the wonderful suggestions. I know that fiction within these parameters might sound horrible to some people but it is what his parents and mental health professionals think are best for him to consume at this time for his safety and the safety of others. Thank you again!