Kateshiya, My Wife Is a Dual-Form Knight.

An engagement fell from the sky, and my fiancée was actually the aloof wandering knight in the game "Singing Tide"? During the day, she is the "executor" Katisya, wearing heavy armor and a sharp sword. She executes the mysterious "contract" indifferently, and looks at me as if she is looking at a bug that needs to be cleared. At night, she turned back into the cute and cute confused girl Kati. She hugged my arm and sweetly called "Husband", and would get angry because she couldn't grab the last cookie. I, Lin Che, an ordinary college student, was just caught up in the "Advent" craze sweeping the world. Game characters, mythical monsters, urban legends... When fantasy invaded reality, I discovered that all of this was no accident. The mysterious "professor" who sent Katishia to me, the destructive force called the "black tide", and the power of the "player" awakened in me that overrides all "awakened ones"... The truth is shrouded in layers of fog. Is my "wife" the last line of defense to save the world, or the key to the end? In order to protect my daily life, and to find out how many forms my wife has, I decided to pick up the keyboard (and the holy sword) and become the only player in this game!