We still have two more read alouds coming sunday and the week after of chapter 3+4. Unfortunately this is only one volume and so far we haven’t made any plans if we want to start reading the main series (we started on this series by watching the anime together).
Try はたらく細胞 (Cells at work); it’s 6 volumens and the last chapter, i think, even includes the corona pandemic (I have only watched the anime up till ep. 10 so far). Though it doesn’t have furigana.
It’s about anthropomorphic cells in a human’s body (it’s a bit like the french kids’ series “Il était une fois… la Vie” from the 80s/90s), with the MC being a red blood cell going about her work throughout the human body which gets frequently invaded by various diseases or encounters problems like heat-stroke.
There’s also a spin-off called はたらく細胞 Black which has the same premise but in a body that’s not healthy due stuff like smoking and being overweight.