Aww, I like that he remembered that moment from his childhood. It's also nice that he's understand and despite his father never actually bringing him again, he never held it against him.
At this point it feels like the reveal of their children's relationship to Tougo's dad (and the dad's friendship to their children) will be an even bigger event than them finally getting to ████.
Would be really cool if this went on to cover their life as a married couple and how they deal with pregnancy and other stuff, kinda like clannad after story but without the sad parts and slower