Shiiyou's world is composed of two tragedies: the death of her younger brother Shiiran, and the "disappearance" of her own personality. She lived as the continuation of her brother, and even her heartbeat was attributed to the misplacement of memory.
…
"If the wave sources themselves are interfering with each other, no matter how precise the instrument is, they will not be able to measure the true interference pattern."
"Shiiyu," she pressed her finger on the coffee-stained Y-function, "how long are we going to pretend to be non-interfering wave sources?"
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Intention: Use dreams as horses and live up to your youth
