There is also an extra cutscene if you visit Magazine's Room after unlocking Vanni.However this does not happen if you skipped the scene or decided to go back to sleep during Vanni's arrival cutscene.You can go on dates with a character when you have 4 or more Hearts with them.To have a successful date you will need to raise the Mood to 5/5 and kiss the character.
(50% if Vanni is on board) You can exit the hall or enter another room and try again if this happens.
You can't give gifts to characters right away after meeting them.
Talking to characters will increase your Relationship with them.
Dates are a great way to increase your Relationship with a character.
Like gift giving, you can't go on dates without talking to a character for a while.