Akabane
Ban: He still is completely interested in him as an opponent, and is curious to see how he'll react now that he had a newborn daughter to protect alongside his wife.
Rena: His darling little psychotic daugther~. True, he hasn't seen her go nuts in a while, but he still cares for and watches after her all the same.

Rider
Ban: <333333333333333333333333333333333333333333
Saber: She trusts her as much as she trusts any other Servant, which is not at all. She'll keep Saber in the dark about what's going on with her for as long as possible, since she can't trust Saber not to use her husband, friends, and children against her at some point.

Mion
Rena: Is her bff, obviously. She's glad to be friends with her, although she does question Rena's judgment over certain...things.

Shion
Rena: She's a cute girl, and Shion enjoys hanging out with her when she can.

Yuffie
Vincent: He's emo and enjoys avoiding people, but she still has hopes that one day he'll break out of that shell of his! She considers him to be a very close friend, and will gladly do whatever she can to help him except leave him alone.

Inuyasha
Rena: She's weird, and he doesn't trust her around his ears, so stay away >:|