What?! Seriously?!!!! If you know the shop name please tell me 😂 i will also try looking up the place

i been to elsewhere using cathay pacific and stopover both HK and tokyo before, wat u wanna know?

Or if you are running late, normally once you get down from the plane there will be airport staff waiting and rush you through.

yaya this, they will tell u where to go. just make sure dun exit the gate. i got a fren last time dunno who teach him say need exit n come in again, ended up miss the flight and kena tahan for questioning cause suddenly missing from passengers list

When you reach HK. Just follow the Transfer sign. You will reach Transfer counter.  Check in , Get new Boarding pass and Gate info.  Proceed to new Gate and board aircraft. That all.  Because under same company, your luggage will automatic transfer to another aircraft. You can double confirm it at transfer counter.
HK airport very big, each Terminal have to used airport subway train to jump terminal to terminal.

BTW, as sacwoc said, If your plane from KL to HK was late, normally will be staff waiting for you. They will Fast Forward everything for you to next flight. but Ur Luggage will be collect by next day (sent to your hotel)
Now no more same flight again. From KL to HK will be Cathay Dragon & HK to Tokyo will be Cathay Pacific.
Have to go Transfer counter get new boarding pass & new Gate info.

Cathay sure the best option. Cathay IFE system are excellent. So much movie, song to spent time. Wine & Beer will be serve.