Lala no Kekkon (Official version)

Lala is Ramdane's twin sister, and she has been betrothed to Wolsey, the son of a wealthy merchant family.
However, Lala has feelings for someone else. For her to safely elope, her brother, Ramdane, steps in as the bride.
Ramdane doesn't plan on sticking around and tries to flee the night of the wedding.
However, Wolsey has other plans in mind and spikes Ramdane's drink so that he cannot escape.
He aggressively imposes his will on him, and they spend a night that neither of them will ever forget.