My Maribat idea
When his boss is arrested, Gorilla (legally Gibbon Pennyworth) doesn't like that his 15 year old charge is likely going to live with either his controlling aunt or a spineless mayor. Fortunately, his great uncle works for powerful man with a special spot for tragic backstories. *In my head, I make this an Adrien Agreste/Cassandra Cain as well as Marinette Dupain-Cheng/Damian Wayne, but down the line. I see Adrien and Marinette being 15/16, with Damian at 13 and Cass at 17/18, at the beginning, but the romance doesn't happen till everyone's old enough. Damian's also a little softer, thanks to his Sunshine TM brother. I also don't see Marinette having a major part before a few years pass in story, maybe with her coming to Gothem for college. I like the idea of Adrien and Cass because she could see straight through his fake smiles, and he would have to learn all her subtle signs (I hate the oblivious Adrien trope, and feel he would definitely notice if someone like him as long as that person hasn't denied it on several occasions)