After My Confession Failed, I Became a Printed Warrior

[Group portrait + battle + pseudo-sexual transformation + no system] After spending twelve years with his childhood sweetheart Su Xiaoyun, Gu Tianyan finally mustered up the courage to confess to him. I thought the process would go smoothly, but unexpectedly I was rejected. At this time, a transfer student named Bai Yu was placed next to him. The sudden monster broke the peace of the past, and Bai Yu transformed to meet the enemy. After that, she told Gu Tianyan that in his previous life, he was a demon sword that destroyed everything, and that his body still contained power waiting to be awakened. She hoped to use his power to destroy another demon sword and deal with the people who were chasing her. Gu Tianyan: "That's what I say, but can anyone tell me why I have to turn into a girl to fight?!"