TETHERED BY BLOOD

Kisaki Ayumi has just returned home from university, eager to reconnect with her younger brother, Kisaki Tetta. After years of studying and living away, she is ready to settle back into her peaceful, ordinary life. Ayumi has always been the loving, protective older sister-someone who saw only the best in her brother, even when others misunderstood him.

But something has changed. Tetta has become more secretive, his ambitions larger and more dangerous than Yumi ever imagined. Though she tries to guide him, encouraging him to focus on his future, she is unaware of the dark path he is already walking. Behind her back, Tetta has entangled himself in the violent world of gangs, manipulation, and power plays-an obsession he hides from the sister he adores.

As Ayumi begins to notice small, unsettling changes in her brother, rumors and whispers start to find their way into her life-rumors of dangerous affiliations and violent schemes. The deeper she looks, the more she realizes how far Tetta has strayed from the boy she thought she knew.

Torn between her love for Tetta and the growing fear that she may be losing him to forces beyond her control, Ayumi faces an impossible choice: protect her brother at all costs, or risk everything to confront the truth about his dangerous obsession.

With the bond between siblings tested, Yumi must confront the reality that the brother she loves may already be lost to the darkness.