May I ask why would you want fan translation while there is already high quality licensed translation which already surpassed beyond the fan translation, and continue on at the pace of one volume every two month (which is like three chapters every week)? No fan translation will be able to keep up with such a fast pace.
Search for "Ascendance of a Bookworm" whereever you usually buy books. I buy kindle books at amazon.com.
I believe its done by @Sam Pinansky J-novel club https://j-novel.club/c/ascendance-of-a-bookworm/search