Inspired by this amazing reader fic. Gojo senior obsessed with his daughter in law, gojo junior's wife, suguru.
First time he saw sgr was at his son's 16 birthday, he introduced sgr as his best friend. Sgr was a shy pretty little thing, smiling softly at his bf's father. His voice was soft too, and gj senior found himself almost unable to take his hands off sgr's. His son never bringa friends home, probably doesn't have any. Gj senior was as welcoming as possible to sgr. It was a great memory for him. But sgr didn't come to the gojo mansion much, and that would be their last meeting until satoru left his wallet behind one day. Gj senior could see a small pic of sgr inside, though it look like his son took this secretly.
The third time they met in person, it was as satoru's gf - soon to be fiance and wife. They were asking for his blessing, which he happily did. They were smitten with each other, and sgr grew up to be a beautiful young man both inside and outside. The wedding was right after, and like his son, gojo senior was speechless when he saw sgr in the white wedding kimono. He feels like a young groom again.