Plane game, a mysterious game with infinite possibilities, but Liu An feels that he may have played a fake game... My game is not the same as others'. No matter her appearance or strength, she is an invincible best friend...you can play it anytime, anywhere You can open a dungeon of the world tree at will...you can abduct various characters as your new world...and there are letters from my sister...wait! Where did I get my sister?!