Wierd that Tokyo bike looks nothing like the bike on the Citizen site. On the site the bike has chainstays and a different frame design, different handlebar locking mechanism and a few other things.
Your bike is like the Jieku.
JIEKU - Tianjin Fuji-ta Bicycle Co.,Ltd.
Maybe the frame shown on their Citizen site is an older model and that frame type is no longer made at the factory.
Looks a nice bike though.
If it is a fuji-ta that's not a bad thing they are great quality and the most advanced bike factory I believe in China. They make bikes for a lot of brands like Cannondale, Raleigh, Scott, Mongoose, Bianchi plus many others and many direct sellers probably including Citizen. Obviously price dictates component quality used but the frames are normally good whatever the material.