To put it simply, it is the story of Yamamoto Takeshi's rebirth as a tutor.
Note that this Yamamoto Takeshi is the reborn adult Takeshi Yamamoto in the world ten years later in the original work, so this Takeshi Yamamoto did not experience the future war when he was a boy.
Note that this is a background that assumes that after the war in the future, when the teenagers from ten years ago return to their own time, it is assumed that Tsunayoshi Sawada, who faked his death, wakes up unexpectedly and then dies.
Note that the CP of this article has not yet been determined.
Please note that the author is not a critic, and some settings in the article may be different from the original work.
Note that there is no guarantee that this article will be updated or completed. This is all due to the author's love for the original work and his dissatisfaction with the lack of fans who have reborn the original work, so be cautious before entering.
New on 8/4:
Please note that this article may have people from other anime novels come to contribute, or it may borrow settings from other novels, so those who cannot accept it may proceed with caution.
If the above is acceptable, please read on.
※Characters from other works that have been confirmed to participate in the show so far: Naruto from Another, Aozaki from Sora no Kyoukai in the extra story, Enoshima Shields from Danganronpa (scheduled), and others are yet to be determined.
Conception: