Kuro and Piko were very close brothers, since they had pretty much no one else. Piko became very dependent on Kuro, until he got a boyfriend, and Kuro got a girlfriend. But, after incidents leading to both of them breaking up with their lovers, they became closer again. So, it's no surprise that when Piko told Kuro he had a new boyfriend, Kuro's initial reaction was to freak out.
The rest? Well, you'll have to see.
WARNING: This story contains sensitive topics such as anxiety, depression, and rape. Read at your own risk.
Cover Art by @FUJODirst, used with permission.