幼馴染にフラれた僕は神社に彼女を下さいと神頼みに行った　そしたら神様からヤンデレ美少女に好かれるという特級呪物を授かった件 (Associated Names)

In the first year of high school, there was a girl that caught the attention of a student named Takemitsu Saeki. The girl’s name was Sanae Kashiwagi. They had been friends since infancy, commonly known as childhood friends. Encouraged by the advice of his friends, Saeki decided to confess to her. However, she was already…