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A mature and stable person who protects himself, and a domineering and careful person who protects himself, from school to marriage? From being helpless to having a perfect life!

Originally, his best friend was going to marry the murderous Sixth Prince, but he had a sister who was a favorite concubine, so the emperor directly ordered her to marry the Sixth Prince. Fortunately, the Sixth Prince was handsome, gentle and considerate!

I live freely and casually, all because he is behind me!