CTC the Convenient Ramune Bottle
CTC's Ramune bottle is very convenient because the cap unscrews. 
You will regret unscrewing a fresh bottle, just use the marble pusher. 
If you are American, unscrewing this bottle is harder than it looks.  The bottle is left hand threaded.
CTC Unscrewed
Codd bottle parts:
  • Red = Stopper pusher,
  • White = Shipping spacer,
  • Blue = Unscrewable cap,
  • Glass marble stopper sitting on top of soft rubber seal