Yukiteru's mother comes home to find that he has a new "girl friend". Yuno and his mother bond quite well, but Yuno may have eyes not only on his mother, but on her "bag of tools" as well.

After finding out that little Reisuke was the fifth future diary owner, Yuno puts her entire life in danger to save Yuki once again.

School is back in session and Yuki is nervous about making friends. Yuno would rather he just didn't. Another Diary User is making a play, people are being murdered left and right and who is Aru Akise and why is he so interested in Yuki?!