The Gentlemen's Alliance † Vol. 11 (manga)

Final Volume!

Haine goes to Shizumasa and Takanari's grandfather, the head of the Togu family, to ask him to release the twins from their fate. He tells her she must pass the same trial the twins went through for determining the Togu heir. Haine agrees, but little does she know that a former friend is now out for her life.