A rumor begins spreading around the class that Kaori and Shogo are friends. Finding himself a bit envious, Yuki upsets Kaori by asking her to tone down on inquiries about Shogo. However his words hit Kaori harder than expected, resulting in their first fight to which she leaves school early that Friday. Kaori eventually finds herself at the river where she accidentally loses her diary, while at the same time Yuki goes to Kiryu for solace. Kaori then collapses from a cold when she returns home, coincidentally knocking the reminder about her diary off her door...