Ogawa Koichi clearly remembers that the Kinoshita Yu who used to stick to him is no longer his Kinoshita Yu.
It was him who pushed her into that abyss with his own hands.
The most gratifying thing is probably that she is not dead yet.
There is just one less ordinary girl in the world, and one more patient with habitual amnesia.
That's all it really is.
That's all.