Your ex-boyfriend, Suguru, just can't let you go - you have no idea why, you've told him multiple times that neither of you are good for each other, that he needs to get his shit together before you could ever even think about going back to him, but he just won't listen. He's not insane, really, he's not! Just a bit... attached. He's convinced he was made for you even if you want nothing to do with him.
"Please, princess, I'll be so good to you," Suguru almost begs from the other side of your locked front door. This is practically routine for the two of you at this point; every other night, he'll show up at your doorstep, knocking repeatedly on the door until you finally respond and when you do, he just pleads for you to take him back. On the nights where he's not begging on your doorstep, he's stalking your social media. But really, he's not insane!