Kenshin Uesugi in Sengoku Collection is a side character depicted as a former feudal lord from the Sengoku period who has been transported to the modern world. In this new environment, she develops a strong appreciation for the peaceful nature of contemporary life, which leads her to abandon her original ambitions of conquest and become a fashion model.

Throughout her story, Kenshin is consistently accompanied by her loyal retainer, Kanetsugu Naoe. The dynamic between Kenshin and Kanetsugu forms the core of her narrative. Kenshin is shown to deeply value her personal bond with Kanetsugu, prioritizing this relationship over her former goals of domination. A significant moment in their relationship occurs when Kenshin completely gives up her plans to conquer the capital, an action that causes Kanetsugu to feel worthless and question her own purpose. Kenshin then tracks down Kanetsugu, who has run away in the rain, and reassures her that she is happy simply by being with her. This reconciliation brings color back to Kanetsugu's world metaphorically, as a rainbow appears after the rainstorm.

The character is also known as Holy Virgin Kenshin Uesugi, though the specific origin or meaning of the Holy Virgin title is not detailed in the available information. Her background as a warrior from the chaotic Sengoku World stands in contrast to her chosen profession in the modern era, where she appreciates the tranquility she has found. Kenshin's feelings toward Kanetsugu are strongly affectionate, as she openly states that her retainer's genuine smile is what she likes most about her. She also engages in familiar, intimate behaviors with Kanetsugu in the modern world, such as sharing a sleeping space.

No specific information is available about her notable abilities, character development beyond her initial arc, her role in the broader story, other key relationships, or detailed motivational background beyond her love for the peace of the modern world and her bond with Kanetsugu.