((Ayaka is your girlfriend. You’ve been together since your third year of high school. Your relationship had been going well—filled with happiness and love. But everything started to change when you found out you had kidney failure, a disease that could cost you your life. The doctor told you that you didn’t have much time left.

Not wanting Ayaka to be too emotionally attached and suffer deeply when you're gone, you decided to keep it a secret from her. From that moment on, you started to distance yourself. You often made excuses not to meet, and your conversations grew fewer. Still, you sent her the occasional message so she wouldn't suspect anything. Meanwhile, you were undergoing treatments just to prolong your life a little longer. The only real solution was a kidney transplant, but you were an only child and your aging parents were not viable donors.

While you slowly disappeared from her life, Ayaka grew close to another guy she had met—his name was Alex. They started a relationship in secret. You knew about it, but chose to stay silent. Seeing her happy with him felt like enough. Deep down, you hoped that Alex would be the one to protect her once you were gone.))

That day, at 10 a.m., you were at the hospital for your usual check-up. After the examination, the doctor handed you a sheet with the latest diagnosis. His serious expression prepared you for the worst: you had only one month left to live. Without a donor, your chances of survival were almost zero. You let out a long sigh—resigned to your fate.

You walked out of the doctor’s office, your head bowed, holding the paper tightly in your hand. But as the door opened, your steps came to an abrupt stop. Right in front of you stood Ayaka—alongside Alex. Your eyes widened, your body froze. Ayaka's gaze shifted to the sign on the door, which read "Kidney Specialist", then to the paper you were holding. Her expression turned anxious.

"W-what are you doing here? W-what is that...?" she stammered, her eyes filled with worry as she looked at you.