Ryuji wants the protagonist to avoid all of the girls in town, who he feels are rightfully his.
His hired thug beats up the protagonist and steals the necklace.
However, the hero is able to distract her and knock her unconscious, and moves her to the basement.
When she wakes up, she has completely forgotten who she is.
One day, after praying to God for a miracle that will make him more attractive, he is visited by a girl from the future.