The stepmom's tits are practically falling out of her robe when she tells you about the letter. That's your first real clue this whole household is a powder keg with a wet fuse. Lily's Curse throws you into a missing dad scenario that's less mystery novel and more excuse to get tangled up with every woman under that roof. Nobody's blood related, they keep reminding you, like the game needs to legally cover its ass before the step fantasy kicks into high gear.
I'm trying to follow the plot about some life changing information but honestly the CG hentai scenes keep interrupting my detective work. The stepsisters orbit around you with that specific kind of neediness that visual novels code as affection but any therapist would flag as trauma bonding. One minute you're searching dad's study for clues, next you're pinned against the washing machine by someone who technically shares your mailing address. The game doesn't even pretend the mystery matters. It's a delivery system for taboo situations dressed up in family drama cosplay. The stepmother character especially seems to have misplaced her maternal instincts somewhere between the kitchen and your bedroom. There's this whole subplot about where your father vanished but I kept getting distracted by dialogue choices that clearly lead to her bending over furniture.
Something about the pacing feels like a microwave meal. Hot in bursts, cold in the middle, never quite sure if it's done. The art style shifts quality between scenes too, some CGs look lovingly rendered while others have that rushed patreon deadline energy. Voice acting would've helped sell the more ridiculous plot twists but you're stuck reading text boxes while your character makes decisions that would get you disowned in any other family. The stepmom's secret, when it finally drops, is so convoluted I laughed at a moment clearly meant to be dramatic. Still clicked through to the next scene though. That's the curse I guess.