Tied up between Fei/Elly and the Prince/Elika from the Prince of Persia reboot. I feel like the way Prince of Persia was built was perfect for building a relationship with Elika. Aside from the fact that she was, arguably, the LEAST irritating AI partner ever, the fact that interaction was limited to just the Prince and Elika forced more effort into the relationship. Another brilliant point to me was the player-controlled random dialogue. It was kinda nice to just be able to initiate little blurbs of dialogue whenever, and I was pleased to see the diversity there, rather than just throw away lines on repeat.

Now if I could just get them to stop milking the sands of time series and give me a proper sequel so we could resolve that cliffhanger...