Evergreen Duology!
hiya, thank you so much for the ask!!
the Evergreen Duology exists pretty much only as a jumbled mess of ideas, half a character arc and bits of research, but i will tell you what i have so far
Rían and his little sister Maeve grew up on their mum's stories about the fae and the feywild. mostly warnings, but also a couple baffling and hyperspecific tales. the two of them are very close and have stayed close even after their stepmother's transphobic ass kicked Rían out of the house years ago
so, when Rían gets a call from Maeve in the middle of the night about whispers from the woods out back and the plants acting weirdly and then the call cuts off with a scream, you bet he hauls ass back to his hometown. it's too late, his sister is already missing and his stepmother still hates him and his dad is as absent as ever, but he's pretty sure he knows what happened
problem is, he doesn't fully remember his mum's stories. solution is, she had them written down. problem is, that journal is in the house. which he has no access to. so he's gotta figure out a way into the house, get together a group of people who'll believe him (or at least help him) and then go rescue his sister in the feywild. how hard can it be?
(very. the answer is very)