1.Nadeshiko & Sonomi--friends and cousins.
2.Sonomi adores Nadeshiko.
3.One day Nadeshiko fell from a tree onto a new teacher called Fujitaka.
4.Nadeshiko fell in love with Fujitaka.
5.Sonomi is jealous.
6.Nadeshiko tells Sonomi that she is going to marry Fujitaka.
7.Sonomi went ballistic.
8.Seven years later; Sonomi & Mr. Daidouji gets Tomoyo.
9.Nadeshiko & Fujitaka gets Sakura (Cherry blossoms).
10.Later years; Sakura & Tomoyo best friends.
11.Sonomi & Fujitaka meet again--Sonomi blames Fujitaka for Nadeshiko's death.
12.Sakura softens the rivalry by using the Flower card.
13.Sonomi prefers Sakura than Tomoyo--treats her like part of the family.
14.Tomoyo lost her voice--Sonomi tells her it's alright and comforts her.
15.Tomoyo & Sonomi becomes closer after that incident.