Tomoyo and Sakura first-meet in Third-Grade when receives an eraser-in-Class after forgetting One of her own. The Eraser, likely used only that one-time, has become One of Tomoyo's Most Precious Possessions. It was that One Random act-of-Kindness that Sparked the Relationship between the two, where as Sakura's Ongoing Cheerfulness, Kindness and Cuteness are Matched by equal amounts-of-love and Devotion from/ Towards Tomoyo.