Looking to visit Beijing in November as a US citizen for three nights and want to confirm if my flight booking will comply with TWOV rules.

Looking to book

HND-PEK/PEK-ICN using ANA miles. Since ANA rules require I start and end in the same country, I need to tack on a throwaway flight ICN-HND to make it work. Will book that flight as far out as I can which is end of April.

Since this will all be technically under one reservation, will I have any problems having that ICN-HND flight even though that last flight will be booked for sometime in April.