The fact that Erika's younger brother is Takumi, a member of the popular idol group "Third Sense," becomes a hot topic among the Lemon Angel cadets. Haruka is his big fan. He begs Erica to let him meet. Erika invites Haruka and Tomo to her house for convenience with Takumi. However, on the day of the appointment, Haruka finds out that Takumi will be away from home due to urgent work.