S1·E10 Sakura and the Flowery Athletics Meet

It's Sports Day at Sakura's school so family members has come to cheer the students on. Sakura meets Tomoyo's mother, Sonomi Daidōji for the first time. When Sonomi and Sakura's father, Fujitaka, meet, both are shocked. From their conversation, it is revealed that Sonomi is a cousin to Sakura's mother and she blames Fujitaka for her death, though not in any direct way. While Sonomi and Fujitaka race in the parent's race, there is a shower of flower petals. Sakura suspects a Clow Card and finds The Flower on the roof of the school.