Ok, Here is a more detailed explaination.
Be in Chapter 7 with the Basement upgrade unlocked.
You leave the tavern
You click the button that says "Market"
You click the button that says "Specialty Shop Street"
You click the button that says "Go to the outskirts of the market"
You enter the only available option "Suspicious Shop"
Then you purchase the item "Contraceptive Potion" for 200 gold each
Also purchase the item "Mandragora Drops" for 3000 gold each, If you do not have enough lewdness and sexual desire.
You then back out and head back to the Tavern.
Have Liliy in a Pink Mood with a high lewdness and sexual desire (Drink tea with a Mandragora Drop if needed)
From a fresh new day, start clicking on Lily's breasts or butt until you are no longer able to get a +1 on your Life
Once that is achieved and after you do your daily Tavern business, in the Evening the event will trigger for the [At Night, Tavern] event.
I was vague in my previous posts because I assumed people knew how to play the game and how to buy items at the point they got to chapter 7. but I should not have made any assumptions.
