Juuuuust Right
Rare9.6%Sleep in three women's beds.
1. Talk to Lillia right from the start of the game. Then go to the house you started in and walk upto her bed. Make sure you are holding down the button to make your character move. After a second a message will come up saying if you want to sleep in the bed.
2. When you go to Zalem's store, talk to her first then buy something. Once you done this, go to her bed and do the same as above to prompt the message to sleep in her bed.
3. Right at the end talk to Maria when you are going to fight the final boss. Once you done this, go all the way back to her house and sleep in her bed.