There was another notable josei one-shot that came out late this year. It's all about grief and loss. In that sense, it feels like the perfect compliment to a year like 2020.
MY BROKEN MARIKO (Mai Buroken Mariko), by Waka Hirako. First published in 2019 and first published in North America in 2020.
PLOT:
Tomoyo Shiina was enjoying a quick meal of ramen when she learned that Mariko died. Mariko had been Tomoyo's best friend since they were kids, and now she feels guilty for not being able to do enough to save Mariko from the abuse and mental torment she suffered in life. In her grief, Tomoyo makes a decision: she will put Mariko to proper rest, even if it means stealing her ashes and going on the run.