Days with My Stepsister, Vol. 5 (light novel)

Yuuta and Saki navigate the complexities of their relationship as siblings while exploring the depths of newfound feelings that blur the lines between familial love and romance. As they embark on a series of shared experiences, including their first date and a Halloween celebration, their bond deepens, drawing the attention of those around them. This secret double life challenges their understanding of love and connection, leading to moments of both excitement and uncertainty.