I'm back with an idea!!!!!!! I might use it in the future, but I've still haven't decided yet.

Adrien had a normal childhood until losing his mother and his father's attention at age six. He was lonely and confined to his room while trying to stay the perfect son for his father. Yet, it was never enough.

Once old enough, Adrien leaves is cold home and joins the army where he meets Kagami (or some other girl). They fall in love blah blah blah date blah blah blah until he finally is about to ask for her hand in marriage.

Then, in a tragic battle against a terrorist group, The Akumas, Kagami is shot. Adrien is by her as she slowly bleeds to death (because they couldn't get her medical attention in time). Not being of use as a soldier anymore and with PSTD, Adrien moves to Paris. There, he lives grumpily and has to be watched by a caretaker in case anything bad happens (or maybe does something bad).

Fresh out of collage and dreams to work under her favorite fashion designer, Marinette was ready to take on any challenge. So when a requirement to volunteer comes up, she is willing to do so to get into the Agreste company. Mariette chose to be a caretaker and is assigned for the one who has the record for making most caretakers quit. After a 'not so good' start, the two slowly but surely grow closer.

Will Marinette help Adrien overcome his past and PTSD or will she be the next to quit?

There you go!!! If you need more info on this, then PM me!! 😁👍