Oda Nobunaga

Saburo is a high school student good in sports, but not very good with his studies. One day, Saburo travels back in time and arrives in the Sengoku period of 1549. There, Saburo meets Nobunaga Oda who looks and sounds just like Saburo. Nobunaga Oda is the son of a warlord and magistrate of the lower Owari Province. Nobunaga Oda though is physically weak and he asks Saburo to take his place. Then, Saburo as Nobunaga Oda attempts to unify the country of Japan.

During the Sengoku period, there are many factions constantly at war. One of these is led by a one-eyed man named Date Masamune and another by the imposing Takeda Shingen. The latter has a fiercely loyal subordinate named Sanada Yukimura who goes head to head against Date Masamune multiple times, but the battles between them tend to get interrupted. One such battle occurs when both men try to go after another leader named Imagawa, and they’re forced to break off their heated duel when Imagawa attempts to flee the scene with his body doubles. Yukimura and Masamune go after separate Imagawas, but all of the doubles are killed by a third party, and when their paths cross again, they are in front of the menacing Oda Nobunaga and his army. It was Nobunaga’s subordinates that killed those body doubles, and Nobunaga himself proceeds to kill the real Imagawa with a shotgun blast to the head.

In the Taiheimeji era, the Tokugawa shogunate values breasts highly, equating them with wealth and status. The Manyu Clan, government allies, know secret techniques for breast enhancement, detailed in a scroll. Chifusa, the clan's heir, flees with this scroll, rebelling against the oppressive norms set by her clan.

The story takes place in Japan in the early 21st century, in an alternate reality where the Tokugawa Shogunate has remained in power. In this reality, student councils are tasked with oppressing schools. Yagyuu Muneakira is a high school student who rebels against his student council with the help of girls who've had the names of famous samurai heroes passed on to them.

The story follows Rena Yukuhasahi, a reserved office lady and Ryouhei Hachiya, a businessman and fellow colleague. Yukuhasahi appears to be the most reserved girl in the company, but becomes a super beautiful woman when she dresses up. Flustered in the presence of her transformed self, Hachiya insists on taking her out, only to find themselves in front of a love hotel.

Miyo's abusive family deems her worthless – but together with her powerful husband-to-be, her true self and hidden powers slowly begin to shine.