[M4F] A guardsmen of the Militarum and a sister of the Sororitas. A cliche 40k romance story

Hey there pals, hope you're doing well. I'm here today with an idea for a Warhammer 40k story involving a relationship between a young, inexperienced guardsman, and an older veteran sister of battle that takes an interest in him. I would be playing the guardsman who maybe had a relative who was of a high rank in the militarum, while you would be the sister of battle who takes notice of me one day for one reason or another. Perhaps somewhere around one of the military bases or even out on the battlefield? My character with be fairly new with only a few battles and of an average size. While your character would be a veteran sister Superior that has seen many wars and is also insanely tall (thinking at least 6'7" or more) who decides to take him under her wing and look out for him on the battlefield field, and take care of him in increasingly more intimate ways between all the fighting. This is a 40K story so a fair amount of the plot would revolve around our characters time fighting, which I would like to be fairly detailed. As your character who is much more confident and dominant than mine slowly asserts herself as the the one who owns mine through some gently femdom. I have several other ideas for 40k themed stories and would also be interested in coming up with or hearing any more ideas. I am looking for a partner that is detailed and literate, preferring at least 2-3 paragraphs per response. I am also looking for someone who is familiar with and knows 40K lower rather well, at least about sisters of battle and the guardsmen. Let me know if you are interested. Also please tell me a little bit about the Sororitas and who the saint that helps them in battle is so I know you have some knowledge of the lore, thank you.