Kojima said that as a child he did not read and that he rejected…

In 2010, a display in a bookstore marking the 120th anniversary of Agatha Christie’s birth re-hooked Kojima and led him to reread her major novels to find out what had fascinated him as a child.

Kojima placed his awakening to reading in fifth grade, when he plunged into mystery novels from around the world. He continued with them through sixth grade, and upon finishing elementary school he moved on to science fiction, which he described as his companion until college; from that period he barely remembers reading anything else.

After Publish or Perish, Kojima began slipping away alone to the bookstore opposite the tutoring school and felt that spending time among the books meant he had entered the adult world. He awaited each monthly Columbo novelization and went to the bookstore weekly even when no new book had come out, to the point of wondering whether he was really attending the tutoring school or the shop. There he discovered Agatha Christie and Ellery Queen, which opened the way to mysteries, science fiction, adventure, and his future profession.

In 1974 Kojima attended a tutoring school in another city more for the adventure of the commute than for studying. One rainy day he took shelter in a bookstore in Ikeda, and the large cover of the novelization Columbo: Publish or Perish, which contained black-and-white photographs inside, led him to buy with his allowance the first book he had chosen out of his own interest. He used each photograph, appearing about every twenty pages, like a breath of air and read all 261 pages in one sitting.

Kojima compared Christie’s novels to quiz shows and video games: brisk reads of precise length and density that focus on dilemma and deceit rather than leaving a depressive social or emotional burden. He argued that, as with action or puzzle games, readers learn her patterns with practice and engage in an intellectual contest with the author, though Christie will defeat them again if they become complacent.