A city with no walls (known as The Rose sanctuary) in a world of grey is about a city of people that do not hide behind walls and although titans still try to kill them they still enjoy their lives. How ever there is a reason why this world is called Grey.

Eren and Hope are twins, born at the same time but with completely different destinies. Find out what happens when they both join the military and meet new people. One of which Hope slowly starts to fall for. But will he fall in love with her too? Or is their time together going to be cut... Short?

He was outspoken, pessimistic, and annoyingly honest. She was strange, careless, and a bit unorthodox. But, they both had a common intent: staying alive.