We Agreed to Break up Amicably, Why Are We so Yandere-Y?

Bai Yu, an unlucky guy who awakened the weakest E-level power [Paper Plane]. He just wanted to live a low-key life, but he didn't expect that the two SSS-level ex-girlfriends he "abandoned" two years ago would become his lingering nightmare! Bite! Your monitor's ex-girlfriend Lin Yuxi sent a text message: Ayu, I heard that you have been working hard recently. So good. However, isn't the direction of our efforts a bit biased? After all, everything about you should belong to me. (With weird cage expression) [Ding! Your daughter's ex-girlfriend Su Li sent a text message: Bai Yu, you are really surprising. D-class peak? It seems that I have to speed up the progress. I won't be merciful in competitions. But don't worry, I will just beat you half to death and then take you home to take good care of you. (With a weird scalpel expression) And the way his gentle and lovely ex-fiancée looks at him doesn't seem right? !