Kamba goes to see Asami only to find she has forgotten all about him. He tries getting some information out of two other girls, but they are attacked by Natsume's red balls, causing them to lose their memories. Meanwhile, Shoma reluctantly follows Ringo's orders in order to let her have her diary, having him move a lot of stuff over to Tabuki's apartment, but she ends up coming down with a fever. It is revealed that Ringo's late sister, Momoka, used to date Tabuki and Ringo felt that, in order to be accepted by her family, she would have to become Momoka by fulfilling what was written in her diary. Despite her fever, Ringo sneaks off to under Tabuki's house to spend her 'first night' with him, whilst Natsume is shown to have her own penguin, discussing 'Project M' with someone.
Ringo si sta organizzando per trasferire le sue cose a casa del professore. Shōma vuole sempre controllare il diario della ragazza; lei gli permetterà di guardarlo solo se gli darà una mano nel trasloco per realizzare quello che lei definisce "il progetto M".
事故にあった元彼女・久宝阿佐美の見舞いに訪れる冠葉。
しかし彼女の記憶から、冠葉の存在は消え去っていた。
同じ頃、自分の「日記」を貸す代わりに協力するよう苹果に言われた晶馬は、苹果の引っ越し作業を手伝わされていた。
