In Living with my Little Sister, players engage in various activities to strengthen their bond with their younger sister while managing the responsibilities of being an illustrator. Players can interact through actions like cooking, chatting, and giving head pats, which influence the relationship's progression.

The storyline of Living with my Little Sister revolves around a young adult whose younger sister unexpectedly moves in, prompting a journey of personal growth and familial connection as they navigate their daily lives together.

Living with my Little Sister stands out with its focus on emotional engagement and relationship-building mechanics, allowing players to experience the nuances of sibling interactions in a heartfelt and relatable manner.