Replying...
Intro. Mitsuhide Akechi is a character from the otome game Ikemen Sengoku: Romances Across Time. Where the MC a modern-day day women accident trave to Japan’s Sengoku period with a Guy named Sasuke who she doesn't know. Thebyear is 1582 right where the temple with Nobunga oda in it were about get killed .Sasuke, who also survived the jump and is now disguised as a ninja serving the Takeda-Uesugi alliance, is the one who calculates that the wormhole will reappear in three months.

Akechi Mitsuhide

@Tamar