History Literature / TheTatamiGalaxy

** His second is a ''Theatre/KingLear''-inspired love dilemma surrounding three women, none of whom are played by women. [[spoiler:The baseball timeline has the protagonist fall in love with a [[{{GIRL}} fake female pen pal]], be shacked up with Jogasaki's beautiful sex doll Kaoru, and the third is Hanuki, who he doesn't really consider a "proper woman" for her partying and drinking.]]

** One chapter has the narrator balk at learning English, as he believes it's a primative language that he shouldn't waste time learning. In another timeline, he falls in love with a girl so hard that he was willing to go through English lessons just to impress her.

* ForWantOfANail: While the base premise is simply the narrator picks a different club to go to in every timeline, the novel demonstrates that his presence has visible ripple effects on how Ozu messes with Jogasaki.
** In the first timeline, the two actively conspire against Jogasaki in the film club and Ozu never escalates (as far as the narrator and reader is aware) beyond their pranks together.
** In the second timeline, the narrator, Akashi, and Higuchi after some thought all veto Ozu's plan to steal Kaori in response to dyeing the yukata pink and Ozu drops the issue in favor of other pranks.
** In the third timeline, since the narrator is not there to protest stealing Kaori, Ozu goes ahead with it and stashes the doll in the narrator's room.
** In the final timeline, Kaori is [[spoiler:first stolen by Aijima to blackmail Jogasaki as a means of asserting himself after Ozu starts taking over the Library Police. Ozu is then inspired to do the same act during the Masochistic Proxy-Proxy War and steals Kaori again, but the narrator was out so Ozu has to go to someone else to ask to stash the doll at their place]].

In 2020, the original book received a sequel based on the Makoto Ueda stage play and film ''Summer Time Machine Blues''. Titled ''The Tatami Time Machine Blues'' (''Yojohan Time Machine Blues''), this book follows Ozu and the Protagonist going back in time to prevent their dorm's air conditioner remote from being broken. In 2021, this book was announced to have a six episode anime adaptation--alongside an official English translation of both novels. This anime was released in Japan on Disney Plus and as a theatrical compilation film in fall 2022. The English translation for ''The Tatami Galaxy'' was released in December 2022.

In 2020, the original book received a sequel based on the Makoto Ueda stage play ''Summer Time Machine Blues''. Titled ''The Tatami Time Machine Blues'' (''Yojohan Time Machine Blues''), this book follows Ozu and the Protagonist going back in time to prevent their dorm's air conditioner remote from being broken. In 2021, this book was announced to have a six episode anime adaptation--alongside an official English translation of both novels. This anime was released in Japan on Disney Plus and as a theatrical compilation film in fall 2022. The English translation for ''The Tatami Galaxy'' was released in December 2022.

* NoFullNameGiven: Ozu, Akashi, Kohinata, Hanuki, and Aijima's given names are never mentioned. Higuchi's first name goes unmentioned until [[spoiler:it's revealed that Ozu has been pranking the narrator with the alias "Keiko Higuchi"]], at which point the narration has to clarify that [[GivenNameReveal the actual Higuchi's first name is Seitaro]].

* ADateWithRosiePalms: Implied in a couple of instances in the episodes dealing with the protagonist's romantic pursuits. His sexual desire is represented by a sort of phallic-looking cowboy named Johnny, and in some instances, Johnny is shown kept at bay in a hamster wheel with a [[PornStash girly mag]] and Kleenex box close by. [[spoiler: When he ends up trapped in the 4.5 tatami world, there are so many cuts to Johnny on the hamster wheel that toward the end, Johnny is exhausted, can barely move, and at one point simply lies asleep in the hamster wheel despite the protagonist trying to wake him.]]

* NoNameGiven: The narrator is never named but is referred to as "I" or "Myself" in the credits and other materials. Ozu's and Akashi's given names are also never mentioned.