I think I found this somewhere on the homesmut kink meme where it was linked as a superb femdom rec, and I have to say:

This is the Aradia/Equius fic I needed ever since I saw the thing with the robot, and oh my god, I can't even fully express how fumbling and cute they are, and also how hot it is, and the carefulness with which Aradia puts Equius at ease about his strength, and their misunderstanding at the end, and - and - yeah. This is definitely the Aradia/Equius I always knew I needed. Gorgeous.