- "Because I am going to be your bride, Haruto!"
- —Haruto remembers Airi's words, finally realizing her feelings.
Chapter 18 (第18花), also titled Episode 18 (18話) is an installment of Boys Over Flowers Season 2 by Yoko Kamio. It was released on December 13, 2015 in both Japan and America. The chapter was followed by the nineteenth chapter on December 27.
Airi Maya has been missing for two days and Kaito Taira enlists Oto Edogawa and Haruto Kaguragi to help. Haruto refuses to help before recalling an old memory, which leads to Airi hidden in an abandoned factory.