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Because of Black and White's implacable lack of seriousness, he frequently drags a young man into the underworld. The King of Hell had no choice but to send the boy to the spiritual world...

The protagonist is reincarnated into a young boy. There were so many beauties around him, but he only fell in love with one...

The young man passed away accidentally due to carelessness. But it brought him to the top of his game.