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An ordinary female college student, living an ordinary college life. Everything was originally ordinary, but somehow, just because of the appearance of that person, everything was messed up. She is a talented girl in the chemistry department, and he is her teacher. On the first day of school, the two met each other quietly. She did not remember him, but he returned to his hometown to follow her... Do you still remember me that summer?

"Master, why are you so immortal?" "What does Master look like? It looks like an ice sculpture standing among the dogs." \