agree 100%, past familial love, romantic love, platonic love, i believe they were just soulmates,, born to make the other person the happiest versions of theirselves
maybe unconditional love? when i think about the greek words for love, “agape” comes to mind even though it is descriptive of lovers. the idea that the love they have for each other is so absolute is very pure, as you’ve said.
They do have unconditional love for each other! I also noticed that even tho Remilias feelings are sometimes boderline obsessive, they are surprisingly innocent. I also think that she does have affection for Angel. Since Emi is her entire world, she sees Angel, who can see the "true charm" of Emi, as someone who can share her feelings for Emi and the same view. A comrade lmao, for lack of a better word. That's how I interpreted it anyway.
I felt like the ending suited them pretty well. Since from the beginning their relationship went beyond something that could be described as romantic. I would even go as far as to say that I did not get any Yuri vibes at all. Their love for each other seemed too pure for that. It is also hard to call it familial love, seems not strong enough. It is hard to put a definite type of love here for me. Kinda feels like if you choose only one, it takes away from the relationship and is not enough to define it. Whatever ancient greek used to say about five types of love or something lol. I really liked this story, and hope that anime will do it justice. I hope the animation captures all the facial expressions well!