Library Domestic mystery Sakichi Shiomi's Puzzle and Solve Theorem to think about the circular triangle. Takarajima Island Library

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凜香, heading to the entrance ceremony for the Takarajima Island Library / University, saw a beautiful man talking to a cat on the street. Later, he became acquainted with a young associate professor of philosophy, Shio Misaki Rito, who was a group of eccentric people. One day, when 凜香 visited his lab to look for his friend's missing report, Rito pointed out one after another the discrepancy in his explanation? 「 Round triangle, red green. It's my job to resolve the discrepancy. 」 A new philosophical mystery in which a young philosopher who loves knowledge, who is illiterate and mechanically illiterate, doubts words and understands the truth!