I want to go to the BiPlane shop in the central building in Terminal 1. It is located on the 5th floor. I have 6 hours and 50 mins to spend at NRT. I could spend countless hours at that store with breaks to eat Katsu Don!!!!!!!!!!!!

Questions:
Do i leave the secure area? or is it accessible within the airside? Am i allowed to leave the secure area with my connecting boarding pass?

I am coming into NRT from HKG, and connecting to HNL almost 7 hours later.