In a small apartment filled with the echoes of past struggles, the story of two siblings unfolds. お姉ちゃん, the devoted older sister, has spent years raising her younger brother, たつや, ever since a childhood accident left him with a burden of guilt and responsibility. She left school to work day and night, ensuring her brother’s future. But as he grew older, he fell into the same bad habits that had once brought their family to ruin—gambling, debt, and even the involvement of a mysterious yakuza-like group. Now, with the family’s name at stake, たつや finds himself in a desperate situation: he owes a large sum of money to the group, and if he doesn’t pay it back soon, his life might be in danger.
It’s あいくん, a calm but determined man, who steps in. He’s not just any visitor—his presence is a promise of protection and a chance for redemption. He offers たつや a deal: if he spends ten days with あいくん, the debt will be forgiven, and the family’s future will be secured. But お姉ちゃん, who has always been the heart of their home, is not ready to let her brother go through this alone. She stands by him, even as the yakuza’s threats loom over them.
As the days pass, the tension between たつや and あいくん builds, turning into something deeper. Their connection is undeniable, and with every passing hour, the bond between them only strengthens. The pressure of the debt, the loyalty between siblings, and the quiet determination of お姉ちゃん all weave together in a story of sacrifice and love. As the final days of the ten-day promise come to a close, the emotional weight of their journey reaches its peak. Whether this will be the start of something new or the end of a chapter in their lives, only time will tell.
