Under The Oak Tree summary: “Warning: Mature content: This manga contains materials that might not be suitable to children under 17. By proceeding, you are confirming that you are 17 or older.”The daughter of a duke, the stuttering Maximilian, married a knight of lowly status at her father’s coercion. After their first night, her husband departed for an expedition without another word. He comes back three years later, this time as a famous knight in the whole continent. How would Maximilian face him on his return? “The more I think of you, the more lonely and lonely I become. I don’t know why I can’t quit even though it’s so painful.”