Joy.
The fifth time he forms Tiencha is overcome with joy. He laughs with two voices combined as one. He knows right away why he's here and where he is. His halves kept their promise. They had saved him a dance at the wedding. He looked down at his appearance with a grin. Two different attires meshed seamlessly into a single outfit. A wonderful match to the two golden bands that now joined his engagement rings.
He spun and swayed to the music with no need for a partner. His favorite song was playing. The one that Yamcha had taught Tien to dance to. Tiencha had never heard it before but he knew every word and every beat. When the tune finally faded he opened his eyes to see people surrounding him. Friends. He smiled as he saw them.
"Thank you. This means so much to them. They're both so happy that you're here. All of you." he said.
For the rest of his time he spoke to as many people as he could. He said all the things his halves didn't or wouldn't. Things like how much said person meant to them. How they hoped the world would stay at peace so everyone could be happy. Plus a little bit of secret sharing because if he didn't get a speech to embarrass the grooms with he was sure as hell going to do it now.