Days with My Stepsister

Yuuta Asamura's life changes when his father remarries and he gains a new stepsister, Saki Ayase, who is the top beauty at school. Saki has a history of being independent due to family circumstances, but she struggles with opening up to others, while Yuuta is uncertain about how to treat her. The two aim to maintain a comfortable distance, having learned from their parents' past relationships that men and women should respect each other's boundaries. As they spend more time together, their relationship evolves from acquaintances to friends.