Trying to find a Yaoi

I read this one a little while back and it suddenly came to mind and I wanted to check the new chapters that came out, but I can't remember the title. From what I can remember it starts out an island that is used as a military base and where other countries will send their soldiers to train. Our MC has well-connected family on base that insist he works there for a while and so he does as he doesn't have anything else going on and since he can't live up to his brother's(twin maybe?) levels and everyone's expectation. Here he meets the ML(possibly white-haired?) who is crazy, possibly canibalistic, and definitely sadistic and will maim and kill anyone who slightly annoys him. This creates a very toxic obsession of the ML with the MC and leads to the MC literally going on the run and making a new identity to try to avoid ML, who eventually manages to catch up to him off the island. That's where I left off and I'd really like to get back to it. Any guesses?