A Hanamaru Detective: Tsuchida turns Anzu down when she asks him out on a Sunday date, leading her to believe he's seeing another woman. When Hiiragi suggests they follow Tsuchida, Anzu, Hiiragi, and Koume unite to form the Hanamaru Detective Brigade. Unknown to the Hanamaru Detective Brigade, Sakura was also keeping an eye on Anzu, and unwittingly defended Tsuchida from two Yakuza who merely reprimanded him for littering.
A Hanamaru First Love: The next day, Hiiragi and Koume follow Anzu as she chases after Tsuchida, but Koume trips. Just as she's about to break into tears, a boy extends a helping hand. The boy, named Yu, leaves soon afterward when his friends call him, leaving Koume to stand in the hallway by herself, unable to move, perhaps awed by him.