If you're unfortunate enough to travel through time, follow these rules to survive: First: Don't provoke a queen you can't defeat, for example, one with different colored pupils who's strangling your neck. Second: If there's a captured child who needs your protection, you must protect well, like a captured orphan of the demon king. Third: If you fall in love with that cold female knight, be prepared for the exhaustion of dealing with a straight woman and facing a series of female elves and mothers-in-law. Fourth: Prepare medicines, whether it's for leg injuries or your body.

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