Review Detail of Piknos in Magus of the Wizarding World

A complete retelling of canon with a side story sprinkled in. The MC for some reason is obsessed with maintaining the "right" plotline, meaning he will never actively try to change anything. Even when something does change he seeks to realign it back to canon. What's the point of writing this? Just post a link to where people can buy the series and you'll have your story.