The Truth is Nothing but Lies

A man who, like a supporting character, forgets his past. He occasionally wonders. What became of me? What am I doing? What exactly am I? What do I do now? To discover the true answers to these questions. He began to live from what he had left behind. Being a professor in an all-girl academy with teaching methods in his own current styl-
“Brother, what are you doing?”
“I’m writing a daily diary…”
“I didn’t know you would have a hobby like this.”
“…”