Yeap! I really wish to read a yaoi story that has a "...and 30 years later..." kinda thing. I think the only old gay couple I've seen in any manga is the couple from Kouun no Rihatsushi, the grandpa couple.
Maaa, now I really wish someone can rec me an older couple story.
Ah I remember another one, the main couple in Kozure Ookami feature as granpa couples in Ookami no Ketsuzoku. Taking care of grandkids, picking sides... surprisingly mundane and soothing (=・ω・=)
This manga makes me realize that I wonder what happens to yaoi couples when they get old o.O.