Aodh's Links
aodh may outrank peredur, but he still has a great amount of respect for him, especially for his determination and dedication in becoming captain. aodh may not necessarily be completely open with peredur, but he definitely feels comfortable being a bit more vulnerable in his presence, and has turned to pere for (mostly physical) comfort on more than one occasion
Respect and admiration as his commander, tempered by a little tenderness from being a longtime friend and part-time lover.
susu looks too much like his dad and it hurts aodh's old heart. also susu's contempt makes him a general pain in the ass to deal with and aodh wants to strangle him a little bit (maybe in a sexy way)
A general low regard has turned to contempt in the wake of his father's death and Aodh's new role as his guide. There's some other emotion there, too, but Susumu is not interested in dealing with that right now.