Ordinary Soldier Dreams of the Past

🇯🇵平兵士は過去を夢見る · Hiraheishi wa Kako wo Yumemiru

MangaShounenFinished🇯🇵 First published in 2016ActionAdventureDramaFantasy

Izo Suzuki story, art · Yuu Okano story

After a long battle, John Celias, a soldier of the Demon punitive force, sees the hero topple the Demon King at last...and he is defeated by the remnants of the enemy. When John, who should have died in the war, wakes up, he finds that he has become a baby in his hometown... the same hometown that should have been destroyed by the demons.

Synopsis via AniList