I do a lot of rereading but I don't think you mean this
I reread a lot on a mini scale, as in, for my main reading i reread today what i read yesterday. Then I read a new section and then reread it. That is my session. It works best for prose, for me, but sometimes I’ll do manga like that if it’s very wordy. Read #1 takes more time than any rereads. But the rereads improve my comprehension and help me remember words I just looked up way more than the first pass. It’s very efficient entertainment and learning wrapped up together.
On a longer time scale, I am so enjoying the しろくまカフェ reread. I had previously read some of vol 1 and like you say it is so fun to read it again with the better knowledge I have now.
There is series of books I love that I do the other way around. Read first for fun and get carried away. Then read again more closely and notice more details, lookup unknown words etc.
what I imagined here when I saw this post come up was to poll previous picks and run great book clubs again. For some people it’s new and for others it’s a reread. Maybe starting after しろくまカフェ in that case…
How about RBC Replay Book Club ?