モンスターの肉を食っていたら王位に就いた件

The 12-year-old prince Mars is terrified of being assassinated. His food was poisoned, so he lived on monster flesh.Then one night, a beautiful red-haired woman appears and tells him."You have great prospects. Become my disciple."Because of a single misunderstanding, a boy becomes the strongest king (even though he didn't want to)!