HIROWA's Manga

Theory:
The ghost from the past who torments Yeongwoon about liking Seo-in is the same person that Yeongwoon caught Seo-in kissing. But that person also has a mole on the bottom corner of their mouth. If we look at Seo-in’s family picture, Jaewon (his brother) also has a mole next to his mouth and a similar hair colour as well as similar eye colour to the ghost. Saying “there’s no place for you here” to Yeongwoon.. And we also found out that the 3 of them used to hang out often. So did Yeongwoon catch him kissing his brother? And are Jaewon and Seo-in even related? But they look similar!!! So why would the family talk about Seo-in becoming close with someone he’s not related by blood to during the anniversary of Jaewon’s death…?