Sibling Desires Awaken as Yuuto and Erika Explore Forbidden Love Alone

Yuuto and Erika, stepsiblings, start living together after their father moves to Sapporo for work. Left alone, they grow closer and develop a forbidden romantic bond. Their newfound intimacy catches the attention of Sayaka Ichinose, Yuuto’s observant art teacher, who becomes curious about their relationship. The situation becomes increasingly complex as secrets and desires intertwine.