Amalia/Evangelyne is yuri, to me.
I don't just mean it as in "haha girl kissing" I mean they're childhood friends and it's heavily implied that for a long time they were each other's only friends. However they are officially "princess and bodyguard" which puts a huge wall in between them (Evangelyne is shown multiple times to struggle speaking to Amalia informally even after being asked, and on Amalia's side she has the occasional moment of "YOU ARE MY BODYGUARD YOU'RE SUPPOSED TO RESPECT ME" when she's upset) which I think would lead to those two being weird about each other. Iirc Evangelyne is 17yo in s1 while Amalia is 13yo so I don't think Evangelyne would be interested in Amalia romantically, though she WOULD still have very strong feelings of "this is MY girl I have to protect her this is my job my duty what I was raised for." Amalia absolutely had a crush on Evangelyne tho and the aforementioned combo of "class division" + "childhood loneliness" + "being 13" means she absolutely did not fucking have the emotional maturity to articulate any of that.
Anyways I think at some point in their twenties the gang would hang out together and Amalia would be like "oh man yeah I wanted to kiss Evangelyne SO bad when I was a kid, hell I still do!" and Yugo would nod wisely (I'm fairly certain Yugo crushed on all his friends at some point) and Tristepin would nod wisely ("why WOULDN'T anyone want to kiss my wife. She's awesome.") And Evangelyne would stand here like [TAILSGETSTROLLED.JPEG]