Spoiler — from the ending. Tap to reveal.
“Day before yesterday I saw a rabbit, and yesterday a deer, and today, you.”
4 quotes from Clannad, each with commentary on what it means and why it stuck.
The school's top student, who introduces herself the same way to everyone and stopped growing up on the day her parents did not come home. Her strangest lines are her saddest.
“Day before yesterday I saw a rabbit, and yesterday a deer, and today, you.”
“Hello. How do you do? I'm Kotomi Ichinose of 3-A. I love to read; books I mean.”
This is Kotomi's rehearsed introduction, which she gives here, with a bow, when a classmate asks Tomoya who she is. The odd clarification at the end, that by reading she means books, is the character in one sentence. She places in the national top ten in every subject and has no idea how to talk to anyone, so she memorized a greeting. Kotomi is the Key heroine the anime treats least well; her route is squeezed into five episodes and the adaptation leans on the dream episode to make her likeable in a hurry. The line survives because it is genuinely funny and because it is true.
“How strange. I don't recall taking anyone down with my violin. Not before this.”
Tomoya introduces Kotomi's violin as a deadly weapon with a history of victims. She plays again, then answers his accusation. A classmate complains about his eardrums, and Tomoya announces a victim from the floor. Kotomi's response does something more precise than missing the joke. She disputes the alleged history while allowing that the present performance could be a first. That qualification gives the exaggeration a strange footing: a boast invented to mock her playing becomes a claim she can assess against remembered events. The comedy needs both accounts. Tomoya supplies the inflated image, and Kotomi gives it the courtesy of an evidentiary correction instead of accepting his account. His theatrical collapse cannot settle the question because he has already made himself an unreliable reporter of the damage. The scene is funnier when her literal answer remains an answer, rather than serving only as proof that she has failed to understand him.
“You won't let my work go to waste will you?”
Tomoya has said that he cannot eat all the food spread out for him. Kotomi later explains that she began preparing hers the night before, then asks him not to waste that work. The appeal makes her effort visible while making his appetite disappear. That is why it deserves less credit as affection than it initially invites. A meal can be generously meant and still become an unreasonable demand once eating it serves as proof of appreciation. The surrounding competition sharpens the problem: several people want him to choose their cooking, and another dish cannot solve an excess of food. Whatever anyone else has brought, she has heard the limit he stated. Counting hours of preparation does nothing to increase the amount he can eat.
Kotomi says this to Tomoya as a greeting, and the anime does not explain it, which is correct, because the explanation is the whole arc. Her parents were killed in a plane crash when she was a child, at a time when Tomoya, who has since forgotten her, was her only friend. Kotomi's arc is the one where Clannad's habit of hiding grief inside whimsy is most exposed: the violin gag, the reading in the library, the strange greeting, all of it is a girl who stopped growing up when her parents did not come home. The most charming line in her episodes is also the saddest one, and the show trusts the viewer to arrive at that unassisted.