Silky I wasn't having a pop.
On the return three Crew (Unextended) can do depending on layover rest (18-30 hr rule) either 11:30 or 13:00
FDP.
Even coming back from KIX the FDP is planned as 11:10 there is no need to extend Duty by rest.
And if the flight time back from KIX was 11:35 with strong winds then every crew member would have over three hours anyway so extension is possible.
In summary the rest should normally be split equally as suggested in the fci.