Ambush

An ordinary person living in modern times, with a bit of a goofy personality. All he does is play video games, eat instant noodles, and watch funny videos. He's a homebody through and through.

He woke up one day in a different era. Damn it, even a failing student like him could tell this was the country's most desperate period of resistance against Japan!

To keep things harmonious, the setting is an alternate modern history in a parallel universe!