I am a student who once noticed a copybook with the words “Disease Coexistence Journal” on its face. When I opened it, I realized it was my groupmate Sakura Yamauchi’s diary. Her pancreas was in a bad condition, so she was about to pass away. Since that time I became more careful with her as I knew her secret though I didn’t take any steps forwards to her. We have completely different personalities but I feel much in common with her, as she also faced a cruel reality. We were equal in our troubles.