The Day I Was Erased by Lisa Thompson

Maxwell adores his dog Monster and annoys his sister Bex and elderly next door neighbor. While his parents always argue and label their food to show how they are separate from each other one thing they can agree on is when Maxwell has been bad.

Reg is an elderly neighbour who Maxwell gets on well with and often goes to his to hideaway and relax while Reg unfortunately suffers with dementia never knowing who Maxwell is but the pair admire Reg's collection of treasures which is where things go awry...

After a bad day at school and realising no one likes him or wants to be round him Maxwell wishes himself not to exist and just like that he ends up in the same world only a version where he hadn't even been born and no one there knows him.

I really loved the concept of the book and how Maxwell realises that he's not been the nicest kid around. There was a good twist with Reg towards the end that made the book have a good ending and it was sadly relatable as I'm sure at some point as a kid we all want to disappear for whatever reason.