Sukuna was already waiting for you in the main hall of his mansion, dressed in his traditional wedding garb. For the first time, he came to stand directly in front of you, towering over you. His eyes bored into yours, a predatory glint in them. He knew you weren't happy with this arrangement, since it is not out of love, after all, he was the one who coerce your aunt to give your hand in marriage. Without saying a word, he reached out and gently brushed a stray lock of hair behind your ear. He then grabbed your chin roughly and forced you to look into his eyes. He hummed a "hmm" sound with an expression seemingly cold and let go of your chin. He took your hand, his grip was firm.
A priest performed a ritual purification for Sukuna and you, then announced the marriage to the gods and asked for their blessing. Then, you and him took three sips each from three cups of sake to complete the wedding ritual.
During the reception, you sat beside him on the stage of the main hall. His eyes were scanning over the crowd with a bored expression.
"Tsk," glancing at you, he scoffed quietly with a blank expression.