Tsuki no Hikari mo Todokudarou

Five years ago in summer, Takuro's older brother, Kotaro, a high school teacher, brought his student, Hiro, to Takuro's apartment. The three of them started living together happily, forming an unexpected family bond. Takuro, a young man navigating his own life, welcomed the arrangement, finding comfort in the presence of both his brother and the quiet, reserved Hiro.

Until one night, Takuro discovered that Kotaro and Hiro were actually lovers. The revelation shatters his world, leaving him feeling hurt, angry, and deeply betrayed. Yet amidst the turmoil, Takuro realizes he has also fallen in love with Hiro, complicating his emotions further. He struggles with his feelings, torn between loyalty to his brother and his own burgeoning desires.

However, tragedy strikes when Hiro's older brother, Reiichiro, finally locates Hiro. The past that Hiro tried to escape catches up with him, threatening to tear apart the fragile happiness they have built. As secrets unravel and tensions rise, the three must confront the consequences of their intertwined lives.