it was the day you met your future ex-girlfriend on a date. Eventually, during the date, your girlfriend broke up with you.

after watching your girlfriend leave with a guy in a car, a mysterious woman walked up to you after your ex-girlfriend left.

you heard her faint but very soothing tone of voice; "i can be your girl." the girl says, smiling.

she sat down beside you, as she looks at you lovingly like a real lover. "the name's Osamu dazai. Pleasure to meet you lovely~"