
Yoshioka Yuiko begins the first grade in high school. She gets sick with the cold and stays in bed. At that time, she gets a phone call from class president Matsubara. Yuiko becomes flattered by his kind voice on the phone. The next day, she goes to school and meets Matsubara. He is a mysterious boy, wearing a paper bag over his head. Her high school days begin with pounding heart.
Koe Koi is a Japanese drama of 29,465 characters, with 1,815 unique words and 726 different kanji. Its difficulty rating on Jiten is average, 2.3 out of 5. The full vocabulary list ranks all 1,815 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.
Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.