zaijutsu

After falling on the battlefield a mercenary comes to despite dying, but instead of waking up in the midst of war he finds himself at home. Decades before the war. With the life that flashed before his eyes still fresh in mind, Hugo Vigrin decides that this time around he would do things right. Or, at least, try to actually survive the war.

What happens if you turn down the isekai experience and piss off the goddess trying to migrate you? This is just one possibility.