We Killed Santa Claus and Then Kissed

To erase Christmas, I decided to become the girl's lover. It all began in early December, when the holy night was just around the corner and the city started to become cheerful. Dumped by my seniors, I was trembling with irresistible irritation and sadness as I watched the beautifully shining light (illuminations) in front of the station. I wished that "Christmas" would just disappear already... And suddenly, a girl who seemed to be a high school student appeared in front of me. "You can do it. You can make 'Christmas' disappear." The notebook that she held seemed to be able to "to grant an unwanted wish." But I needed to like Christmas first before she could erase it with the power of her notebook. That was why... "With me, please become a pseudo-lover with me." This is a story to end love, starting with a strange relationship between me and a girl. (Source: Shogakukan, translated)