Chapter 21 (第21花), also titled Episode 21 (21話), is an installment of Boys Over Flowers Season 2 by Yoko Kamio. It was published on February 7, 2016 and was preceded by "Bonus Story 2" on January 24.
Continuing from chapter twenty, Haruto Kaguragi meets an unknown girl in the hotel's bath on accident. He runs away, thinking he will never see her again. The next day, she arrives at Eitoku Academy with Haruto's wallet in tow.