abematv - Can we please get this app on roku, android, appletv all have it

Keep in mind that the content companies create Roku apps.  (Roku themselves created The Roku Channel, and Roku Media Player - not much else.)  So you should tell abematv that you want to watch them on Roku.

Never going to happen.

"If you want to watch AbemaTV in USA, it’s essential to understand that the streaming service is geo-restricted outside of Japan due to licensing reasons. A VPN is necessary to bypass this restriction and enjoy Abema in America."

https://www.streamingrant.com/channels/abema-tv/