I only just started wanikani, so I definitely won’t be joining in on this anytime soon lol, but I just wanted to say how cool it is that you guys do stuff like book clubs on here! For sure making it a goal of mine to reach a point where I can participate in stuff like this.
Everyone has their own timings on when to start but technically you could just learn some vocab and grammar and go for it! I wouldn’t start with death note (walls of text rip) but you could look through some of the stuff that has been read in the absolute beginner’s book club and see if anything interests you. Usually even if they are past book clubs someone will answer any questions you ask, and they have vocab sheets to help guide you through the process. Good luck on your journey!