Giri no Kyoudai dakedo Koibito no Futari wa Doudou to Tsukiaitai

Kazuma and Yuuya are stepbrothers who share a deeper, secret relationship as lovers, living together in their parents' house. They carefully hide their affection from their family, engaging in private moments away from prying eyes. One day, Kazuma's quick thinking saves them from a close call. While Yuuya remains committed to keeping their relationship hidden, he starts feeling increasingly anxious about how long they can maintain the secrecy. Meanwhile, Kazuma encounters Yuuya's student, Matsubara, by chance during a shopping trip. As a part-time tutor at a cram school, Kazuma notices the closeness between Yuuya and Matsubara, sensing a need to watch over the student more closely. He wonders about Yuuya's interactions at the cram school, aware of Yuuya's charm that draws in younger people. Yuuya, with his gentle demeanor and popularity, finds himself admired by many. Kazuma, protective and possessive, struggles with his feelings for his brother. Together, they confront the emotions they can no longer hide from each other.