Koishi likes Kokoro-chan!

Preschool

Kokoro-chan is so kind.

I like kind girls.

Elementary School

Is that so?

Kokoro-chan, come tutor me!

I get motivated when I'm taught by the one I like, ya know~

It can't be helped...

Middle School

High School

You know,

I've already said it how many times, but...

I love you, Kokoro-chan.

Mathematics