The story of Tatami Galaxy takes you on a journey into the mind of an unnamed college student called "I" or "私" (Watashi) in the book. I like to think that the author purposefully made this so, because in some sense 私 is us or has been ourselves in one way or another. Tatami Galaxy is an expedition through different realities of what could have been based on 私's decision on choosing an organization. Overall, there are four scenarios which 私 has lived through that is written in the book. He goes through the different realities with the people he is fated to meet: Ozu (his frenemy), Akashi (his love interest), and Higuchi (the mortal name of the patron god of love).
Each year 私 lives out one of his realities based on his decision on choosing an organization. He narrows it down to four pamphlets that catch his attention: Misogi Movie Circle, A mysterious call for disciples, Honkawa Softball Circle, and the Lucky Cat Restaurant Society. The book goes through these realities in order of how it is stated above. In each reality, he is fated to come into contact with Ozu, which is his guide/enemy in each reality. Each reality explores a different perspective in life through the eyes of 私. In the first reality, 私 has a bitter approach towards love; going so far as crowning himself the nemesis of love. The next reality explores 私's morals as he refuses to steal Kaori-san the love doll for his master. The third reality explores 私's sexual frustrations. The last reality explores again 私's morals and desolate lifestyle: traversing multiple realities through a period of time.
All in all, I believe the main lesson we could learn from this story is that life is complicated and that no matter what expectations we may have of life, be it through our rose-colored lenses of what life should be (as described in the book) it will never meet our standards. We see this evidently in the story as 私 longs, contrary to what he actually says, for a rose-colored life in college. He also regrets at the near end of each reality which organization he has chosen as he believes that if he had chosen otherwise, he could have been as unmarred as he was before choosing an organization.
I believe this part of the story reflects how many people think before making a decision; thinking out every possibility of what could have been or what might have been. We are stacked against what is proven by this book, that sometimes in life as the fortune teller puts it bluntly, "Sometimes they (opportunities) hide in places you don't expect....in order to seize an opportunity, you must act."
Life is unpredictable. We will never know what would happen if we stay idly by and let countless opportunities flow by.
This is best exemplified in the book, wherein, 私 lives different realities. Although the choices he made in these realities did not come out as he had hoped for, each of these choices bore fruit to solid friendships and eventful happenings. The only reality I believe was uneventful was the reality where 私 chose to stay in his 4.5 Tatami room, traversing through different realities in his Tatami Galaxy. This is I believe is a hyperbole of what the book tries to communicate, which is that not much can bear fruit in too much thinking.
Overall, the book shows great promise and it offers a beautiful way of communicating its message to its readers. It is a mix of seriousness and humor, from reading about 私's suffering in running through hundreds to thousands of realities to 私 telling his Johnny that he'd rather be a gentleman than fall victim to lust. I've read just the translation of the book, so I think there are some things I would not have gotten. The book does start every chapter with the same lines so that its readers are made aware that 私 has started another reality. I don't mind it much, I could just skip through these pages, but some might find it annoying. If you're one for a creative way of telling and stretched-out descriptions, I would recommend this book. The book also has an anime, although from what I have remembered, there are some things different between the anime and the book. The anime is as wordy as the book, almost as if you read the book itself. To give it a score, I'd rate Tatami Galaxy a 9.5/10.