ANA buying A380s is a natural network evolution I guess. 30-40% bigger then the 744 VLA's they used over the last 25 years. For the next 25 years, unremarkable.
The've 140 widebodies and are one of the few 777-9 buyers too, so I guess they'll only buy 15-20 for connecting to the Star Alliance hubs (FRA, LAX, ORD) and major slots restricted destinations like JFK, LHR, CDG and the likes.