Over the past few months, Mitsuki's memories have become vague. - When I try to force myself to remember, I get a headache of unknown cause. - I wonder when. - That's right, an empty school. - Since when did taking out the trash in class become the job of the class representative? - Even though I have to go to school on my day off, I only receive responses from my homeroom teacher via LI○E. - Why? - When I try to remember something familiar, my thoughts stop. - This is everything that made me who I am today. - Stop instead of move forward. - This doesn't make me feel comfortable, I don't feel like it's going on, and I can't remember important things. - I don't know who I am. - That's all I can clearly see. - And the garbage is heavy today too...