After transmigrating to the world of Hokage, punching Obito Uchiha, kicking Madara Uchiha, and ultimately marrying a whole household of wives and concubines to reach the pinnacle of life is the dream of countless people.
But Oda Nobunaga, who also transmigrated to the world of Hokage, met a tragic fate. He ended up in the Fire Temple, a place he had never even heard of, and became a bald monk. That was the end of everything: he could no longer build a harem. But that was no big deal. He had a System backing him, with powerful people on his side, so rising to success was no mere dream.
This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.