It sounds like you're referring to — possibly a web novel, light novel, or fan fiction title. Based on the phrasing "A Knight's Common Sense" , this might be a story about a new or inexperienced knight (a "rookie") named Rathi, learning the practical, down-to-earth realities of being a knight, as opposed to idealized heroic tales.
While the narrative often centers on the protagonist's internal monologue, the titular character, , is the soul of the series. Rookie Knight Rathi - A Knight-s Common Sense C...
Rathi's journey to becoming a knight began like many others. He was a young man with a passion for justice and a desire to protect the innocent. With a strong sense of determination, he applied to join the knighthood, eager to learn the ways of combat and the code of chivalry. Despite being a rookie, Rathi's enthusiasm and natural talent caught the attention of his superiors, who saw potential in the young knight. "Rookie Knight Rathi" It sounds like you're referring