BTS love chat messenger is a prank app, which lets you pretend that you are chatting with the members of BTS, including Jungkook, Hoseok, Namjoon, Seokjin, Taehyung, Yoongi, Jimin. 

You can send and receive messages, and video and audio calls with BTS members. It has a theme like a normal messenger app, and the UI of the chat is similar to that of the regular messaging app. You can also select one of the seven members to start a new chat with him or her.

If you want to show a message as a received message, you have to keep the arrow towards the right, and then you have to submit the message.