"Valentine's Day"

Synopsis

Valentine's Day is almost here. Migiwa wants to knit a scarf for Hanawa, and Fuyuta for Oono, so the two go out to buy yarn. There they run into Maruko's sister, picking out yarn with unusual seriousness. The two assume she must be knitting for some boy she likes, but Maruko can't think of anyone. Sure enough, when she gets home, her sister really is knitting...