I'm spoilering for yaoi autism.
Apologies to Learfags in advance; I have had this idiotic idea for a lewd VN where he turns the SubMas into his maids for a week, promising them he'll build more subways on Pasio if they accept the job. In the game (You) would pick a twin to play as and do menial chores while exploring the prince's mansion (or something like that) to trigger events. The lewd events would all be game overs (due to silly and nonsensical reasons, mostly Lear getting hurt badly) and non-lewd events would be ecchi and/or humorous.
Picrel is a game over where Lear dies from Ingo's High Jump Kick after he put a vibrator in Emmet's butthole (https://files.catbox.moe/au4nat.jpg) . The goal of the game would be to finish the week without triggering lewd scenes so the twins can finally have more Subways on Pasio (it actually would be to collect all events to unlock a dress up game or something silly like that). 