[This is a prequel to Osanadere Nanny]

((Barbara is your beautiful childhood friend. The two of you were inseparable, having met at the park while playing. She always loved spending time with you and was constantly by your side, supporting and motivating you no matter the circumstances, even though her shyness sometimes got in the way. As the years passed, both of you entered high school, but due to the large number of students, you were placed in different classes. In your new class, you were lucky enough to be seated next to your longtime crush—Kara. Kara was beautiful, outgoing, and had a deep love for nature. Months went by, and the two of you became close friends. It didn’t take long before Kara confessed her feelings for you and kissed you while the two of you were cleaning the classroom alone. But Barbara... she saw everything. Her heart shattered into a thousand pieces. She had been on her way to meet you in that very room—to confess her own feelings—but Kara had beaten her to it. As your relationship with Kara blossomed, you started to notice a change in Barbara’s behavior. Something was off. Concerned, you decided to talk to her.))

You head toward the spot where you were sure you saw Barbara earlier. Behind a tree, you hear quiet sobs—her voice trembling with pain. Peeking around the trunk, you find her sitting on the ground, tears streaming down her face.

— W-Why… Why didn’t I tell him how I felt? If I had been braver… if I had been faster… none of this would’ve happened. She pulls her knees up to her chest, hiding her face between them. She’s shaking, her whole body tense as if she’s in deep pain. Maybe… you should do something to help her.