Illiendi and Love: He will get it in time but it will take a long time. He'll probably fuck Amano if he wanted and still not get it but as they travel and do things together he will start showing he cares without even realising it (One particular scene I have in mind will show it rather better than others). He's already growing to like Amano as one might like a hamster and to be fair, for him, that's pretty good going in such a short time. Love WILL come into it but how soon/late sort of depends on Amano and their adventure and how things pan out. I don't like jumping straight into the 'love' thing as I like it to feel more realistic. I once had a roleplay where my character loved another (and he loved her) but they didn't say as much for 2 years IRL time. 

Angels: I like the idea of a few guardian angels, 15% (happy medium?) could be that described, perhaps considered 'defective' so looked down on a bit by others but still treated respectfully. I think Dogma is sorta good at explaining some of it, constaintine's take on Angels is pretty good too. But yeah i prefer the more 'biblical' angels rather than the aww we're so sweet ones. Especially when it comes to Paimon as he used to be high in the court of angels and fell (as the other kings did) with Lucifer.