Your 3DS is basically region free after installing cfw and changing the region. Both of these are Japanes 3ds', one with cfw and one without. (I know many of you know this
Nintendo 3DS tendrá 'region lock' | Hobby Consolas
New Nintendo 3DS is region-locked
New 3DS is region locked because of course it is – Destructoid
Tiny Cartridge 3DS — Report: Nintendo 3DS region-locked
It's unfortunate that the 3DS has region locking. Now, thanks to CFW I can finally play Love Plus on my EU 3DS. So far I'm greatly enjoying it! : r/3DS
3DS region lock confirmed - YouTube
Nintendo 3DS: Wireless Local Multiplayer Is Region Locked For Nintendo 3DS Games - My Nintendo News