tonari no seki-kun junior
A 2020 slice-of-life comedy manga spin-off of Tonari no Seki-kun by artist Morishige Takuma. In it Yokoi Rumi has grown up and had a child (Makuru, whose father is implied to likely be Seki Toshinari). She interacts with her sons' antics in a very similar way to how she did with Seki in the original story.
