Very nice and you don't see many stories covering a couple through life.
TBH I often don't like that - because imo they 'mess up' and take it all the way to one or both of them dying of old age! It's like, sure they lived a long full life together which is great, but talk about downer - I don't want a story about characters I like to end on them dying! even of old age!
I remember a good Marisa x Alice series that ends at Marisa's grave and like ;-; thanks for that!
This author had the sense not to spoil it's cute nature like that.