It's a crime to only have this one here. I'm about to drop all of their shit. The Koikoko is just too wonderful. Especially the love letter one.
MathematicsI get motivated when I'm taught by the one I like, ya know~I like kind girls.Kokoro-chan is so kind.I love you, Kokoro-chan.I've already said it how many times, but...You know,High SchoolMiddle SchoolIt can't be helped...Kokoro's tutoring me!Is that so?Elementary SchoolPreschoolKoishi likes Kokoro-chan!