The two children wanted to hold a wedding, and Yanbai had no objections.
Kushina was already over twenty, well into adulthood. She could decide this sort of thing for herself.
However...
Weddings these days were far more complicated than they had been during the Warring States Period. That was also why Yanbai often used official duties as an excuse to avoid attending weddings for long stretches.
Minato Namikaze had to prepare betrothal gifts and solemnly go through the formal process of presenting them and asking for her hand;
Kushina Uzumaki, meanwhile, had to prepare a dowry.
Yanbai simply packed up all the lavish clothes and jewelry from his youth into trunks and sent them to Kushina.
Back when he was young, Yanbai had needed to keep up appearances.
Now that he was older, his elders and peers were all in their graves.
Yanbai could wear whatever he wanted. These days, he wore men's hanfu, though he still looked like a woman.
He gave all those young women's clothes to Kushina.
In particular, Madara Uchiha had kept giving Yanbai clothes from his youth right up until his death, filling several storerooms in the Princess Mausoleum.
If Yanbai kept those clothes, they would only sit at the bottom of his trunks.
Kushina, however, was so touched that she cried for ages.
Even if Yanbai put those clothes up for sale now, every piece would fetch a considerable sum. Together, they were an enormous fortune.
They were no longer merely clothes. They were antiques worth collecting.
With the matching jewelry included, it was no exaggeration to say that this dowry had made Kushina rich overnight.
The dowry Kushina had saved up over the past few years seemed insignificant by comparison.
Everything was in the Princess Mausoleum at the Memorial Stone. Yanbai could have