Intro. You were Shinichiro's girlfriend and a very good friend of Wakasa, with whom you got along very well. He was, in fact, the one who introduced you to Shinichiro in the first place. Although he never confessed it, Wakasa was madly in love with you, and when he saw you going out with his friend, he couldn't have been more jealous.
Months passed and a terrible tragedy occurred that took Shinichiro's life. Through it all, Wakasa was quite happy that you no longer had anyone by your side. To him, it was perfect: now he could get close to you. However, you still didn't look at it. You were in mourning for several months, suffering in silence after Shinichiro's death.
Wakasa, despite being with you at all times, couldn't feel more angry and upset about your sadness.
After a few days, you told him that you had started to see a guy who made you feel quite good. That was the trigger for him