Here comes my unpopular opinion, sorry.
When I first heard about the storyline it really pulled me in and seemed super interesting and sweet with the "soulmate" plot. But it turned strange and unhealthy really fast. I wanted to give it a chance and keep an open mind, but the dark and obsessive "love" felt really disturbing. It puts the relationship in a really unrealistic and unhealthy light.

This is in my opinion not a good BL show and I don't like the way this show glorifies unhealthy relationships.
If you want to watch good BLs I recommend HIStory3: Trapped, 30-sai made Dotei Da to Mahotsukai ni Nareru rashii or 2gether. Even the new show To My Star. All are healthy and you can see a relationship blossoming.